The density of the material of a rectangular block is determined by measuring the mass and linear dimensions of the block. The list shows the results obtained, together with their uncertainties. The density is calculated to be $$\(2.50 \mathrm{~g} \mathrm{~cm}^{-3}\)$$. What is the uncertainty in this result?
A.
\(\pm 0.01 \mathrm{gcm}^{-3}\)
B.
\(\pm 0.02 \mathrm{~g} \mathrm{~cm}^{-3}\)
C.
\(\pm 0.05 \mathrm{~g} \mathrm{~cm}^{-3}\)
D.
\(\pm 0.13 \mathrm{~g} \mathrm{~cm}^{-3}\)
Exam No：9702_w24_qp_11 Year：2024 Question No：3
Answer:
C
Knowledge points:
1.3.1 understand that the avogadro constant Na is the number of atoms in 0.012kg of carbon-12
1.3.2 use molar quantities where one mole of any substance is the amount containing a number of particles equal to the avogadro constant Na
Solution:
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