Particulate Nature of Matter B.3 Ideal Gas Model (id: 35df10f07)

本题目来源于试卷: Particulate Nature of Matter B.3 Ideal Gas Model，类别为 IB物理学

[单选题]
A student is using they;l.hte d50tn equa;9)l , vez6u ebudvqh4z6vc 4ztion $pV=nRT$ to solve for $n$ with the following percentage uncertainties in the measurements.


What is the percentage uncertainty in the calculated value of $n$?

A. 3 %
B. 7 %
C. 9 %
D. 12 %


参考答案:  C


本题详细解析:

Explanation:

To calculate $n$, the student would rearrange the formula to get

$n=\frac{PV}{RT}$

In both operations, the percentage uncertainty must be added, therefore the correct answer is C (2 % + 6 % + 1 % = 9 %)

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