Sergey Bylikin, Gary Horner and, Brian Murphy Solutions for Chapter: Measurement and Data Processing, Exercise 4: Questions

How many significant figures are in $0.0200 \mathrm{g}$?

A burette reading is recorded as $27.70\pm 0.05 {\mathrm{cm}}^3$? Which of the following could be the actual value?

$$\begin{gathered} \mathrm{I}. 27.68 {\mathrm{cm}}^3. \\ \mathrm{II}. 27.78 {\mathrm{cm}}^3. \\ \mathrm{III}. 27.74 {\mathrm{cm}}^3. \end{gathered}$$

A piece of metallic aluminium with a mass of $10.044 \mathrm{g}$ was found to have a volume of $3.70 {\mathrm{cm}}^3$. A student carried out the following calculation to determine the density: density $\left(\mathrm{g} {\mathrm{cm}}^{-3}\right)=\frac{10.044}{3.70}$. What is the best value the student could report for the density of aluminium?

Which experimental procedure is most likely to lead to a large systematic error?

Which are likely to be reduced when an experiment is repeated a number of times?

Deduce the $\mathrm{IHD}$ for codeine using section $37$ of the Data booklet.

Deduce the $\mathrm{IHD}$ for a molecule of molecular formula ${\mathrm{C}}_5{\mathrm{H}}_{10}{\mathrm{N}}_2$.