Question 1

Which of the following is the correct SI base unit for measuring electric current?

Accepted Answer

Ampere (A)

Question 2

A sick child has a temperature of $40.0\ ^\circ\mathrm{C}$. What is the child's temperature in Kelvin?

Accepted Answer

$313.0\ \mathrm{K}$

Question 3

The melting point of gallium is $85.6\ ^\circ\mathrm{F}$. What is this temperature in $^\circ\mathrm{C}$?

Accepted Answer

$29.8\ ^\circ\mathrm{C}$

Question 4

Which of the following measurements is reported with the correct number of significant figures for a ruler marked every 1 mm?

Accepted Answer

$19.0\ \mathrm{mm}$

Question 5

How many significant figures are in the number $0.00310$?

Accepted Answer

3

Question 6

Which of the following numbers is considered exact and therefore has an unlimited number of significant figures?

Accepted Answer

$12\ \mathrm{inches} = 1\ \mathrm{foot}$

Question 7

A penny has a mass of $2.49\ \mathrm{g}$ and a volume of $0.349\ \mathrm{cm^3}$. What is its density?

Accepted Answer

$7.14\ \mathrm{g/cm^3}$

Question 8

Convert $534\ \mathrm{kWh}$ to joules ($\mathrm{J}$).

Accepted Answer

$1.92	imes10^9\ \mathrm{J}$

Question 9

A small airplane takes on $24.5\ \mathrm{L}$ of fuel. If the density of the fuel is $0.821\ \mathrm{g/mL}$, what mass of fuel has the airplane taken on?

Accepted Answer

$20.1\ \mathrm{g}$

Question 10

Which prefix represents a multiplier of $10^{-6}$?

Accepted Answer

micro

Question 11

A runner wants to run $10.0\ \mathrm{km}$. She knows that her running pace is $7.5\ \mathrm{min/mile}$. How many minutes must she run?

Accepted Answer

$62.1\ \mathrm{min}$

Question 12

Which of the following is the correct conversion factor between liters and quarts?

Accepted Answer

$1\ \mathrm{L} = 1.057\ \mathrm{qt}$

Question 13

A bedroom has a volume of $115\ \mathrm{m^3}$. What is its volume in liters?

Accepted Answer

$1.15	imes10^5\ \mathrm{L}$

Question 14

Which of the following is the correct formula for converting Celsius to Kelvin?

Accepted Answer

$K = ^\circ\mathrm{C} + 273.15$

Question 15

A digital balance shows a mass of $50.1\ \mathrm{g}$. How many significant figures should be reported?

Accepted Answer

3

Question 16

Which of the following is the correct SI base unit for luminous intensity?

Accepted Answer

Candela (cd)

Question 17

Convert $1.4\ \mathrm{in}$ to millimeters ($\mathrm{mm}$). ($1\ \mathrm{in} = 2.54\ \mathrm{cm}$)

Accepted Answer

$35.6\ \mathrm{mm}$

Question 18

A sample of steel has a mass of $7.86\ \mathrm{g/cm^3}$. What is its density in pounds per cubic inch ($\mathrm{lb/in^3}$)? ($1\ \mathrm{lb} = 453.6\ \mathrm{g}$, $1\ \mathrm{in} = 2.54\ \mathrm{cm}$)

Accepted Answer

$0.284\ \mathrm{lb/in^3}$

Essentials of Units, Measurement, and Problem Solving in General Chemistry

Study Guide - Practice Questions

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