Q: A sample of jet fuel has a density of $0.768\ \mathrm{g/cm^3}$ and a volume of $173,231\ \mathrm{L}$. What is the mass of the fuel in kilograms?

$1.33 \times 10^5\ \mathrm{kg}$

Q: Which of the following calculations is rounded correctly according to the rules for significant figures in multiplication and division?

$1.052 \times 12.504 \times 0.53 = 6.7$

Question 1

A scientist measures the mass of a sample as 5.01 g using the balance shown in the image. If the sample is a cube with an edge length of 1.20 cm, what is the density of the sample in $\mathrm{g/cm^3}$, and what is the correct number of significant figures in your answer?

Accepted Answer

$2.90\ \mathrm{g/cm^3}$, 3 significant figures

Question 2

A patient has a fever of $102.2\ ^\circ\mathrm{F}$. What is this temperature in Kelvin ($\mathrm{K}$)? Use the correct formulas and significant figures.

Accepted Answer

$312.0\ \mathrm{K}$

Question 3

Which of the following is an intensive property?

Accepted Answer

Density

Question 4

A platinum ring has a mass of $4.53\ \mathrm{g}$ and a volume of $0.212\ \mathrm{cm^3}$. Is the ring genuine platinum? (Platinum density is $21.4\ \mathrm{g/cm^3}$.)

Accepted Answer

Yes, because the calculated density is $21.4\ \mathrm{g/cm^3}$.

Question 5

Which of the following numbers has exactly three significant figures?

Accepted Answer

1.20 	imes 10^3

Question 6

A car engine has a displacement of $5.70\ \mathrm{L}$. What is this volume in cubic inches ($\mathrm{in^3}$)? (Use $1\ \mathrm{in} = 2.54\ \mathrm{cm}$ and $1\ \mathrm{mL} = 1\ \mathrm{cm^3}$.)

Accepted Answer

$348\ \mathrm{in^3}$

Question 7

Which of the following best describes the difference between precision and accuracy?

Accepted Answer

Precision is how close measurements are to each other; accuracy is how close measurements are to the true value.

Question 8

A student records the following measurements for the mass of a lead block: $10.49\ \mathrm{g}$, $9.79\ \mathrm{g}$, $9.92\ \mathrm{g}$, $10.31\ \mathrm{g}$. The true mass is $10.00\ \mathrm{g}$. Which statement is correct?

Accepted Answer

The measurements are neither accurate nor precise.

Question 9

Which of the following conversion factors is exact and has unlimited significant figures?

Accepted Answer

$1\ \mathrm{m} = 100\ \mathrm{cm}$

Question 10

A sample of jet fuel has a density of $0.768\ \mathrm{g/cm^3}$ and a volume of $173,231\ \mathrm{L}$. What is the mass of the fuel in kilograms?

Accepted Answer

$1.33 	imes 10^5\ \mathrm{kg}$

Question 11

Which prefix represents $10^{-9}$?

Accepted Answer

nano

Question 12

A graduated cylinder contains water with a meniscus at the 1.7 mL mark. What is the correct way to read the volume?

Accepted Answer

At the bottom of the meniscus

Question 13

Which of the following numbers is ambiguous in terms of significant figures and should be written in scientific notation for clarity?

Accepted Answer

10,000

Question 14

A metal cylinder has a mass of $8.3\ \mathrm{g}$, a length of $1.94\ \mathrm{cm}$, and a radius of $0.55\ \mathrm{cm}$. What is its density in $\mathrm{g/cm^3}$? (Use $V = \pi r^2 l$.)

Accepted Answer

$4.5\ \mathrm{g/cm^3}$

Question 15

Which of the following calculations is rounded correctly according to the rules for significant figures in multiplication and division?

Accepted Answer

$1.052 	imes 12.504 	imes 0.53 = 6.7$

Question 16

A solution is prepared by mixing $0.355$, $105.1$, and $-100.5820$. What is the sum, rounded to the correct number of decimal places?

Accepted Answer

$4.9$

Question 17

Which of the following best describes the direction of heat flow?

Accepted Answer

From hot objects to cold objects

Question 18

A vineyard has $145$ acres of Chardonnay grapes. If a soil supplement requires $5.50\ \mathrm{g}$ for every $1\ \mathrm{m^2}$, how many kilograms are needed for the entire vineyard? ($1\ \mathrm{km^2} = 247$ acres, $1\ \mathrm{km^2} = 10^6\ \mathrm{m^2}$)

Accepted Answer

$3.2 	imes 10^2\ \mathrm{kg}$

Question 19

Which of the following statements about the graph of atmospheric carbon dioxide concentration is correct?

Accepted Answer

The rate of increase has intensified since about 1960.

Chapter 1: Matter, Measurement, and Problem Solving – Structured Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards