[单选题]
A student is using the eq
zy73j gg3o) es2azsf.u
fm1tpo*d yv; 3ation $pV=nRT$ 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 %)