Physics Unit13: Temperature and Kinetic Theory

1#

State the zeroth law of thermodynamic9c b6h0ae q k5m,bbwl2s.

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A bimetallic strip, consisting of metal G on the top and metal H otbregnys)dr 2u94h r bi.g1 9eg*)+akn the bottom, is rigidly attached to a wall at the left. (See Fig. 13-1.) The coefficient of linear thermal expansion for metal G is greater than that ofbb2. a t ke yr491nhudsi)*ggeg)r+ r9 metal H. If the strip is uniformly heated, it will

A. curve upward.

B. curve downward.

C. remain horizontal, but get longer.

D. bend in the middle.

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When the engine of your car heats up, /ac m*(dqf a:n *j )tyjpje;7dthe spark plug gap will

A. increase.

B. decrease.

C. remain unchanged.

D. decrease at first and then increase later, so that the two effects cancel once the engine reaches operating temperature.

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Consider a flat steel plwzuv5f7s7*ahg p izpv-g x7( 3ks,(q:aybnd, ate with a hole through its center as shown in Fig. 13-2. When t*ak7gvi ,(:da,ng s( sb7 xpzyp-7vu 3whzq f5he plate's temperature is increased, the hole will

A. expand only if it takes up more than half the plate's surface area.

B. contract if it takes up less than half the plate's surface area.

C. always contract.

D. always expand.

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The coefficient of linear expansion for aluminumov 1gqks 6b 3vz,v3;wf is $1.8 \times 10^{-6} \; ^{\circ}C^{-1}$. What is its coefficient of volume expansion?

A. $9.0 \times 10^{-6} \; ^{\circ}C^{-1}$

B. $5.8 \times 10^{-18} \; ^{\circ}C^{-1}$

C. $5.4 \times 10^{-6} \; ^{\circ}C^{-1}$

D. $3.6 \times 10^{-6} \; ^{\circ}C^{-1}$

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The surface water temperaturzsd ,,mqg 43dfe on a large, deep lake is $3 \; ^{\circ}C$. A sensitive temperature probe is lowered several meters into the lake. What temperature will the probe record?

A. a temperature warmer than $3 \; ^{\circ}C$

B. a temperature less than $3 \; ^{\circ}C$

C. a temperature equal to $3 \; ^{\circ}C$

D. There is not enough information to determine.

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which temperature scale never gives negativke ,xvk, c 2kfww53zqd;73c pqe temperatures?

A. Kelvin

B. Fahrenheit

C. Celsius

D. all of the above

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which two temperature changes are equiva cjacne 6)66q1ra gut4lent?

A. $1 ^{\circ}K = 1 ^{\circ}F$

B. $1 ^{\circ}F = 1 ^{\circ}C$

C. $1 ^{\circ}C = 1 ^{\circ}K$

D. none of the above

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The temperature in your cb8y 6+tzg9+ky o6 xzm,wtvs,f lassroom is approximately

A. $68 \; ^{\circ}K$

B. $68 \; ^{\circ}F$

C. $50 \; ^{\circ}C$

D. $295 \; ^{\circ}K$

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10#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

State Boyle's law.

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11#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

State Charles's law.gg9(hk 2tmmb0

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12#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

State Gay-Lassac's lasd68s ulfsq;r j39-io w.

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A container of an ideal gas at 1 atm is compresfr// yihi5) yised to one-third its volume, with the temperature held constant.//yy5 r)i hifi What is its final pressure?

A. $1/3 \; atm$

B. $1 \; atm$

C. $3 \; atm$

D. $9 \; atm$

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the pressure acting on an ideal gas at constant 5p dw2wzs1x1qtemperature is tripled, its voxd 1ws2wq5zp1 lume is

A. reduced to one-third.

B. increased by a factor of three.

C. increased by a factor of two.

D. reduced to one-half.

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15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

According to the ideal g ,xalmd0 ;xt5jas Law, PV = constant for a given temperature. As a result, an increase in volume 0taj,xd lm;5x corresponds to a decrease in pressure. This happens because the molecules

A. collide with each other more frequently.

B. move slower on the average.

C. strike the container wall less often.

D. transfer less energy to the walls of the container each time they strike it.

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16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The number of molecules in one mole of a ng,e6/xn,l)f ly)ds ppeq; 0k substance

A. depends on the molecular weight of the substance.

B. depends on the atomic weight of the substance.

C. depends on the density of the substance.

D. is the same for all substances.

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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A container holds N molecules of an ideal gas at a given tempery2 y4bg+ogk6:h jvw/sature. If the number of molecules in the container is increased to 2N with no change in bhs6g+/yv :2g yo4jkw temperature or volume, the pressure in the container

A. doubles.

B. remains constant.

C. is cut in half.

D. none of the above

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18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Both the pressure and vol,of ssozuth ly/ 60cgbwl9t s91a: ;(lume of a given sample of an ideal gas double. This means that its temperatutf ty ,a1l oslcss ;l90bgh 6(uo:9w/zre in Kelvin must

A. double.

B. quadruple.

C. reduce to one-fourth its original value.

D. remain unchanged.

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19#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The temperature of an ideal g /mnze5)mtcu 5as increases from $2 \; ^{\circ}C$ to $4 \; ^{\circ}C$ while remaining at constant pressure. What happens to the volume of the gas?

A. It decreases slightly.

B. It decreases to one-half its original volume.

C. It increases slightly.

D. It increases to twice as much.

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20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A mole of diatomic oxygen molecules anduif3wxiei 9+ 5jo36qtp7w:up a mole of diatomic nitrogen molecules at STP h7p6uxpq3u: j3+e wo95itiwif ave

A. the same average molecular speeds.

B. the same number of molecules.

C. the same diffusion rates.

D. all of the above

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21#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Consider two equal volumes of gas at a gival2zn5(hvf u 9 bo3*i5h3xzk een temperature and pressure. One gas, oxygen, has a molecular mass of 32. The other gas, nitrba(zxn 5*2uo lfe353vhzi9 hkogen, has a molecular mass of 28. What is the ratio of the number of oxygen molecules to the number of nitrogen molecules?

A. 32:28

B. 28:32

C. 1:1

D. none of the above

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22#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The average molecular kinetic energy of a gas can be dete7eorzq(4o 4zo8x1assf s s/4n rmined by knowing only

A. the number of molecules in the gas.

B. the volume of the gas.

C. the pressure of the gas.

D. the temperature of the gas.

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23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A sample of an ideal gas is slowly compressed to one-half its original volb76 mz9mhza u 9,vrfw9ume with no change in temperature. What happens to the average speed of the molecules in the s 7z fvb,9m9haw ur69mzample?

A. It does not change.

B. It doubles.

C. It halves.

D. none of the above

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24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A sample of an ideal gas is heated and its Kelvin t:ll iq5+iw (em hcfntc*;rz ;:emperature doubles. What happens to the averag;zcel :nli mq;w(+*:rf c5ti he speed of the molecules in the sample?

A. It does not change.

B. It doubles.

C. It halves.

D. none of the above

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25#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The absolute temperature of m(nvz ;,i1qmcan ideal gas is directly proportional to which of the following?,vi z(;m1cm qn

A. speed

B. momentum

C. kinetic energy

D. mass

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26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In order to double the average speed of n 8(0bec*tcn gthe molecules in a given sample of gas, the tempec*be ( nn80ctgrature (measured in Kelvin) must

A. quadruple.

B. double.

C. increase by a factor of square root two of its original value.

D. increase by a factor of square root three of its original value.

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27#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Oxygen molecules are 16 times more massive than hydrogen molecules. At )*:5f71lxfxeoyt pjgdrb u:4 a given temperature, the average molecular kinetic energy oxp1 7:fb l)4d5fx:t*uger j yof oxygen, compared to hydrogen

A. is greater.

B. is less.

C. is the same.

D. cannot be determined since pressure and volume are not given

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28#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Oxygen molecules are 16 times more massive txq+jpg2l+t2a. c-a7j nzc +xthan hydrogen molecules. At a given temperature, how do their average molecular xp qtx2j.l+ a+t cjn2+7zga-cspeeds compare? The oxygen molecules are moving

A. 4 times faster.

B. at 1/4 the speed.

C. 16 times faster.

D. at 1/16 the speed.

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29#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A fixed container holds oxygen and helium ,o+ ;imhj ) r,nq,bqjvgases at the same temperature. Which one of the following statements is correc nji,o,h jvqqr;b+m ),t?

A. The oxygen molecules have the greater kinetic energy.

B. The helium molecules have the greater kinetic energy.

C. The oxygen molecules have the greater speed.

D. The helium molecules have the greater speed.

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30#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A container is filled with a mixture of helir,e at+l*rjc8n1cba cs-o4c zdr(0x9um and oxygen gases. A thermometer in the container indicates te1co8x(a ls rrj ccza -t4 c,9+n*br0dhat the temperature is $22 \; ^{\circ}C$. Which gas molecules have the greater average kinetic energy?

A. It is the same for both because the temperatures are the same.

B. The oxygen molecules do because they are diatomic.

C. The helium molecules do because they are less massive.

D. The helium molecules do because they are monatomic.

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31#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A container is filledix+mctti 2 x0ga3:xj2 rze 0b3 with a mixture of helium and oxygen gases. A thermometer in the container indt0exm3i+j 3x0 :irz2ca xtbg2icates that the temperature is $22 \; ^{\circ}C$. Which gas molecules have the greater average speed?

A. The helium molecules do because they are monatomic.

B. It is the same for both because the temperatures are the same.

C. The oxygen molecules do because they are more massive.

D. The helium molecules do because they are less massive.

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32#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The three phases of matter can exist together in equilibrium at th sbe sma*q07au-*7( brah 2ioae

A. critical point.

B. triple point.

C. melting point.

D. evaporation point.

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33#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Supersaturation occurs in air when ths /7fc)dhu8wkvm). oke

A. relative humidity is 100% and the temperature increases.

B. relative humidity is less than 100% and the temperature increases.

C. relative humidity is less 100% and the temperature decreases.

D. relative humidity is 100% and the temperature decreases.

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34#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Express your body temp1 :jvq 9nznqx 31,rgbterature ($98.6 \; ^{\circ}F$) in Celsius degrees.

A. $37.0 \; ^{\circ}C$

B. $45.5 \; ^{\circ}C$

C. $66.6 \; ^{\circ}C$

D. $72.6 \; ^{\circ}C$

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35#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Express $68 \; ^{\circ}F$ in $^{\circ}C$.

A. $7.0 \; ^{\circ}C$

B. $20 \; ^{\circ}C$

C. $36 \; ^{\circ}C$

D. $181 \; ^{\circ}C$

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36#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Express $-40 \; ^{\circ}C$ in $^{\circ}F$.

A. $-72 \; ^{\circ}F$

B. $-54 \; ^{\circ}F$

C. $40 \; ^{\circ}F$

D. $4.4 \; ^{\circ}F$

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37#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The temperature changes from 35eF during the night to cys2blv ropdj:p .5tc( j(g.*$75 \; ^{\circ}F$ during the day. What is the temperature change on the Celsius scale?

A. $72 \; ^{\circ}C$

B. $40 \; ^{\circ}C$

C. $32 \; ^{\circ}C$

D. $22 \; ^{\circ}C$

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38#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A temperature changeb+wt7-u7o94f ra fwen of $20 \; ^{\circ}C$ corresponds to a temperature change of

A. $68 \; ^{\circ}F$

B. $11 \; ^{\circ}F$

C. $36 \; ^{\circ}F$

D. none of the above

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39#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

At what temperature are the numerical readings on the Fahrenheit and Celsiu /g/28oaa twq4v7 plu/p4hvvbs scales thvhu8aag2b oql/7/vt pp 4/wv4e same?

A. $-30^{\circ}$

B. $-40^{\circ}$

C. $-50^{\circ}$

D. $-60^{\circ}$

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40#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A steel bridge is 1000 m l k qzqh9e0.ffd(e;*c wdt5xl.ong at $-20 \; ^{\circ}C$ in winter. What is the change in length when the temperature rises to $40 \; ^{\circ}C$ in summer? (The average coefficient of linear expansion of steel is $11 \times 10^{-6} \; ^{\circ}C^{-1}$)

A. $0.33 \; m$

B. $0.44 \; m$

C. $0.55 \; m$

D. $0.66 \; m$

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41#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An aluminum rod 17.4 cm long a8co7r nhoqtz(-:gan h5zx2.at $20 \; ^{\circ}C$ is heated to $100 \; ^{\circ}C$. What is its new length? Aluminum has a linear expansion coefficient of $25 \times 10^{-6} \; ^{\circ}C^{-1}$.

A. $17.435 \; cm$

B. $17.365 \; cm$

C. $0.348 \; cm$

D. $0.0348 \; cm$

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42#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

By how much will a slab of :q7fnx 7 6y dgksw vv732le9tvo9zqh:concrete 18 m long contract when the temperature dropev n :vklso:qv69yx 797z2qfw d 37gths from $24 \; ^{\circ}C$ to -$16 \; ^{\circ}C$? (The coefficient of linear thermal expansion for concrete is $10^{-5} \; ^{\circ}C^{-1}$)

A. $0.50 \; cm$

B. $0.72 \; cm$

C. $1.2 \; cm$

D. $1.5 \; cm$

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43#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A bolt hole in a brass plate has a diame:yi-t z*cv hwu1-yo 1iter of 1.200 cm at $20 \; ^{\circ}C$. What is the diameter of the hole when the plate is heated to $220 \; ^{\circ}C$? (The coefficient of linear thermal expansion for brass is $19 \times 10^{-6} \; ^{\circ}C^{-1}$)

A. $1.205 \; cm$

B. $1.195 \; cm$

C. $1.200 \; cm$

D. $1.210 \; cm$

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44#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

20.00 cm of space is available. Hofuqvtxd 9o hikl4j 4).dg-9d jj)+:a iw long a piece of brass at $20 \; ^{\circ}C$ can be put there and still fit at $200 ^{\circ}C$? Brass has a linear expansion coefficient of $19 \times 10^{-6} \; ^{\circ}C^{-1}$.

A. $19.93 \; cm$

B. $19.69 \; cm$

C. $19.50 \; cm$

D. $19.09 \; cm$

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45#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A 5.0-cm diameter steel shaft has 0.10 mm clearance all 2+g 10tdsy8ppxm w* owaround its bushing at $20 \; ^{\circ}C$. If the bushing temperature remains constant, at what temperature will the shaft begin to bind? Steel has a linear expansion coefficient of $12 \times 10^{-6} \; ^{\circ}C^{-1}$.

A. $353 \; ^{\circ}C$

B. $333 \; ^{\circ}C$

C. $53 \; ^{\circ}C$

D. $680 \; ^{\circ}C$

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46#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

$400 \; cm^{3}$ of mercury at $0 \; ^{\circ}C$ will expand to what volume at $50 \; ^{\circ}C$? Mercury has a volume expansion coefficient of $180 \times 10^{-6} \; ^{\circ}C^{-1}$.

A. $450 \; cm^{3}$

B. $409.7 \; cm^{3}$

C. $403.6 \; cm^{3}$

D. $401.8 \; cm^{3}$

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47#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

1 L of water at $20 \; ^{\circ}C$ will occupy what volume at $80 \; ^{\circ}C$? Water has a volume expansion coefficient of $210 \times 10^{-6} \; ^{\circ}C^{-1}$.

A. $1.6 \; L$

B. $1.013 \; L$

C. $0.987 \; L$

D. $0.9987 \; L$

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48#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The volume coefficient+/sq s0ah jgfa7hu)b* of thermal expansion for gasoline is $950 \times 10^{-6} \; ^{\circ}C^{-1}$. By how much does the volume of 1.0 L of gasoline change when the temperature rises from $20 \; ^{\circ}C$ to $40 \; ^{\circ}C$?

A. $6.0 \; cm^{3}$

B. $12 \; cm^{3}$

C. $19 \; cm^{3}$

D. $37 \; cm^{3}$

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49#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A 500-mL glass beaker of water is filled to the rim at a temperatt7) o2vzzqzrd d528zwure of $0 \; ^{\circ}C$. How much water will overflow if the water is heated to a temperature of $95 \; ^{\circ}C$? (Ignore the expansion of the glass and the coefficient of volume expansion of water is $2.1 \times 10^{-4} \; ^{\circ}C^{-1}$.)

A. $3.3 \; mL$

B. $10 \; mL$

C. $33 \; mL$

D. $100 \; mL$

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50#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

For mercury to expand fv q ao;w6flg(3rom $4.0 \; cm^{3}$ to $4.1 \; cm^{3}$, what change in temperature is necessary? Mercury has a volume expansion coefficient of $180 \times 10^{-6} \; ^{\circ}C^{-1}$.

A. $400 \; ^{\circ}C$

B. $139 \; ^{\circ}C$

C. $14 \; ^{\circ}C$

D. $8.2 \; ^{\circ}C$

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51#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A mercury thermometer has at ej7 xpl. hrpns/q 5/8(uir b4l)g-pe bulb of volume 0.100 $cm^{3}$ at $10 ^{\circ}C$. The capillary tube above the bulb has a cross-sectional area of 0.012 $mm^{2}$. The volume thermal expansion coefficient of mercury is $1.8 \times 10^{-4} \; ^{\circ}C^{-1}$. How much will the mercury rise when the temperature rises by $30 \; ^{\circ}C$?

A. $0.45 \; mm$

B. $4.5 \; mm$

C. $45 \; mm$

D. $45 \; cm$

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52#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Convert $14 \; ^{\circ}C$ to $^{\circ}K$.

A. $46 \; ^{\circ}K$

B. $100 \; ^{\circ}K$

C. $287 \; ^{\circ}K$

D. $474 \; ^{\circ}K$

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53#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Convert $14 \; ^{\circ}F$ to $^{\circ}K$.

A. $263 \; ^{\circ}K$

B. $287 \; ^{\circ}K$

C. $-10 \; ^{\circ}K$

D. $474 \; ^{\circ}K$

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54#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Convert $14 \; ^{\circ}K$ to $^{\circ}C$.

A. $46 \; ^{\circ}C$

B. $287 \; ^{\circ}C$

C. $25 \; ^{\circ}C$

D. -$259 \; ^{\circ}C$

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55#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Convert $14 \; ^{\circ}K$ to $^{\circ}F$.

A. $287 \; ^{\circ}F$

B. $-434 \; ^{\circ}F$

C. $-259 \; ^{\circ}F$

D. $474 \; ^{\circ}F$

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56#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Oxygen condenses into a liquid at approximate 4ge* soe g-5;w)x2hmo ubm zg2sl4g0y9pm7a jly 90 K. What temperature, in degrees Fahrenheit, does this correspzg2)ax-o egmbom4s240 5 7wjys 9gu;m glp*ehond to?

A. $-193 \; ^{\circ}F$

B. $-217 \; ^{\circ}F$

C. $-265 \; ^{\circ}F$

D. $-297 \; ^{\circ}F$

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57#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An ideal gas occupies 300 L at an absolute pressure of 400 kPa. Find the absol 6isrpw.a(g n*ute pressure if the volume changes to 850 L and the temperature remains 6 ragp*s .(winconstant.

A. $140 \; kPa$

B. $640 \; kPa$

C. $850 \; kPa$

D. $1140 \; kPa$

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58#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Two liters of a perfectpwj 6iwewa.q ycc5,5,dn 4x( t gas are at $0 \; ^{\circ}C$ and 1 atm. If the gas is nitrogen, $N_2$, determine the number of moles.

A. 0.37

B. 0.73

C. 0.089

D. 0.098

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59#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Two liters of a perfect gas arelvc z) . 27o3e8r vy+tjxgse(m at $0 \; ^{\circ}C$ and 1 atm. If the gas is nitrogen, $N_2$, determine the number of molecules.

A. $3.5 \times 10^{22}$

B. $5.3 \times 10^{22}$

C. $4.7 \times 10^{22}$

D. $7.4 \times 10^{22}$

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60#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Two liters of a perfect gas are/. j/vtdc2z6(rndux3r gk sg9 at $0 \; ^{\circ}C$ and 1 atm. If the gas is nitrogen, $N_2$, determine the mass of the gas.

A. $2.5 \; g$

B. $2.7 \; g$

C. $2.9 \; g$

D. $3.1 \; g$

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61#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How many water molecules are there in 36 g of water? s 8k9 gwb)l4,gqowg+ v7g yyh4 Express your answer as a multiple of Avogadro's number NA. (The molecular structure of a water mol9g gqwgb 4y74hk,8v)w ogy+slecule is $H_2 O$.)

A. $36 \; NA$

B. $2 \; NA$

C. $18 \; NA$

D. none of the above

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62#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How many mol are there in 2.00 kg of copper? (The atomic we0i 9,i wjz gdd+,hljs*ight of copper is 63.5 and its speciz*sg,+j9 l di,wh ji0dfic gravity is 8.90)

A. 15.3

B. 31.5

C. 51.3

D. 53.1

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63#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A sample of a diatomic ideal gas oxg+k.* eefs)zccupies 33.6 L under standard conditions. How *egskzf .)e+xmany mol of gas are in the sample?

A. 0.75

B. 3.0

C. 1.5

D. 3.25

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64#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An ideal gas has a pressure of 2.5 atm, k i86z* c6dt,qudi k)ma volume of 1.0 L at a temperature of $30 \; ^{\circ}C$. How many molecules are there in the gas?

A. $6.1 \times 10^{23}$

B. $6.0 \times 10^{22}$

C. $2.4 \times 10^{22}$

D. $2.3 \times 10^{23}$

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65#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An ideal gas in a container1 5.vuaie/-)q wmzjhm+mfkaq oie *l2, osl7* of volume $100 cm^{3}$ at $20 \; ^{\circ}C$ has a pressure of $100 \; N/m^2$. Determine the number of gas molecules in the container.

A. $4.2 \times 10^{6}$

B. $6.0 \times 10^{23}$

C. $2.5 \times 10^{18}$

D. $5.2 \times 10^{18}$

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66#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A sample of helium (He) occ -dc6*.gg ocj. ym,umcupies 44.8 L at STP. What is the mass of the sample?*,.c m-.gucy go jmdc6

A. $2 \; g$

B. $4 \; g$

C. $6 \; g$

D. $8 \; g$

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67#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A 25-L container holds hydrogen gas at a gaugehlr,x;8in8ec s8fwfrs38 /gd pressure of 0.25 atm and a temperature ofhe,xn 8sdwrf /f 8is;l38cg8r $0 \; ^{\circ}C$. What mass of hydrogen is in this container?

A. $1.4 \; g$

B. $2.8 \; g$

C. $4.2 \; g$

D. $5.6 \; g$

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68#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A $100-cm^{3}$ container has 4 g of ideal gas in it at 250 kPa. If the volume is changed to $50 \; cm^{3}$ and the temperature remains constant, what is its new density?

A. $400 \; kg/m^{3}$

B. $250 \; kg/m^{3}$

C. $80 \; kg/m^{3}$

D. $50 \; kg/m^{3}$

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69#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An ideal gas occupies jz 4s zz wegrgykz1glk7zq /sg -:0 8)d*68kbg$600 \; cm^{3}$ at $20 \; ^{\circ}C$. At what temperature will it occupy $1200 \; cm^{3}$ if the pressure remains constant?

A. $10 \; ^{\circ}C$

B. $40 \; ^{\circ}C$

C. $100 \; ^{\circ}C$

D. $313 \; ^{\circ}C$

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70#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A constant pressure gas thermometer is i(n:pv64- jsrbn 6g znmnitially at $28 \; ^{\circ}C$. If the volume of gas increases by 10%, what is the final Celsius temperature?

A. $31 \; ^{\circ}C$

B. $43 \; ^{\circ}C$

C. $58 \; ^{\circ}C$

D. $64 \; ^{\circ}C$

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71#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An ideal gas occupies 4htol 0twzfd,xrb (9gt/1 l8m ;ba) t3i.0 L at $20 \; ^{\circ}C$. What volume will it occupy at $40 \; ^{\circ}C$ if the pressure remains constant?

A. $43 \; cm^{3}$

B. $4.3 \; L$

C. $8.0 \; L$

D. $2.0 \; L$

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72#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A balloon has a volumc bkz2lu7: 1hsrk3qlm i,nw+ 6e of $1.0 \; m^{3}$. As it rises in the Earth's atmosphere, its volume expands. What will be its new volume if its original temperature and pressure are $20 \; ^{\circ}C$ and 1.0 atm, and its final temperature and pressure are -$40 ^{\circ}C$ and 0.10 atm?

A. $2.0 \; m^{3}$

B. $4.0 \; m^{3}$

C. $6.0 \; m^{3}$

D. $8.0 \; m^{3}$

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73#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A given sample of cacl : u;ih8z6qmrbon dioxide ($CO_2$) contains $3.01 \times 10^{23} \; molecules$ at STP. What volume does this sample occupy?

A. $11.2 \; L$

B. $22.4 \; L$

C. $44.8 \; L$

D. $32.7 \; L$

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74#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

$500 \; cm^{3}$ of ideal gas at $40 \; ^{\circ}C$ and 200 kPa (absolute) is compressed to $250 \; cm^{3}$ and cooled to $20 \; ^{\circ}C$

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75#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

$1500 \; cm^{3}$ of ideal gas at STP is cooled to -$20 \; ^{\circ}C$ and put into a $1000 \; cm^{3}$ container. What is the final gauge pressure?

A. $11 \; kPa$

B. $40 \; kPa$

C. $113 \; kPa$

D. $141 \; kPa$

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76#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An ideal gas has a density o.-ay fd7j/ igpf $1.75 \; kg/m^{3}$ at a gauge pressure of 160 kPa. What must be the gauge pressure if a density of $1.0 \; kg/m^{3}$ is desired at the same temperature?

A. $356 \; kPa$

B. $280 \; kPa$

C. $91 \; kPa$

D. $48 \; kPa$

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77#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An ideal gas has a volumeqh wwgrvlb597: ahyk470i p2q of $0.20 \; m^{3}$, a temperature of $30 \; ^{\circ}C$, and a pressure of 1.0 atm. It is heated to $60 \; ^{\circ}C$ and compressed to a volume of $0.15 \; m^{3}$. What is the new pressure?

A. $1.0 \; atm$

B. $1.2 \; atm$

C. $1.5 \; atm$

D. $2.7 \; atm$

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78#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A mixture of gases cd g,dlk7j p)60 pznydg)g(q*eontains 15 g of $H_2$, 14 g of $N_2$, and 44 g of $CO_2$. The mixture is in a 40 L sealed container which is at $20 \; ^{\circ}C$. What is the pressure in the container?

A. $3.3 \times 10^{5} \; N/m^{2}$

B. $4.4 \times 10^{5} \; N/m^{2}$

C. $5.5 \times 10^{5} \; N/m^{2}$

D. $6.6 \times 10^{5} \; N/m^{2}$

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79#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the average separationbes idvzxz,(a/ h/2 .k between air molecules at STP?

A. $3.34 \times 10^{-7} \; cm$

B. $4.33 \times 10^{-7} \; cm$

C. $5.32 \times 10^{-7} \; cm$

D. $5.23 \times 10^{-7} \; cm$

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80#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

At what temperature is the average kinetic energy of an atom in heliu93h:mqw / * tb(rl4 cfjxu;dsnm gas equal to 3hmtlbjwxrc dn4qu(; :9* s/f$6.21 \times
10^{-21} \; J$?

A. $200 \; K$

B. $250 \; K$

C. $300 \; K$

D. $350 \; K$

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81#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

At what temperature a) j-e ea .j)3gq-njhswould the rms speed of $H_2$ molecules equal 11,200 m/s (the Earth's escape speed)?

A. $102 \; K$

B. $104 \; K$

C. $106 \; K$

D. $108 \; K$

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82#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A cylinder contains 16 g of helium gas at STP. How much en 5c0nuo2amh 2rergy is needed to raise the t ho2urmac250 nemperature of this gas to $20 \; ^{\circ}C$?

A. $789 \; J$

B. $798 \; J$

C. $879 \; J$

D. $998 \; J$

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83#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the temperature of a gas is4 );ig akdr+qp increased from $20 \; ^{\circ}C$ to $40 \; ^{\circ}C$, by what factor does the speed of the molecules increase?

A. 3%

B. 30%

C. 70%

D. 100%

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84#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A molecule has a spee*x)ri z *u6mxn30wsvle:bh l .d of 500 m/s at $20 \; ^{\circ}C$. What is its speed at $80 \; ^{\circ}C$?

A. 500 m/s

B. 550 m/s

C. 1000 m/s

D. 2000 m/s

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85#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The molecular mass of oxygen molecules is 32, and the molecular +i)n03 pvjcemvkhr( 3c /tb.cmass of nitrogen molecules is 28 j0/.c3+vmc tbhi c)vn( pke3r. If these two gases are at the same temperature, the ratio of nitrogen's rms speed to that of oxygen is .

A. $\sqrt{8}:\sqrt{7}$

B. 8:7

C. $\sqrt{7}:\sqrt{8}$

D. 7:8

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86#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The molecular mass of nitrogen is 14 times greater than that of hydrogen. a-k 8 twhw125:1i kqsop/bzseIf the molecules in these two gases have the same rms speed, the rat 151aewshw t-kz8:q pio2sb/ kio of hydrogen's absolute temperature to that of nitrogen is .

A. $\sqrt{14}:1$

B. $1:\sqrt{14}$

C. 1:14

D. 14:1

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