Q: Convert $23.5\ \mathrm{m}$ to nanometers ($\mathrm{nm}$).

$2.35 \times 10^{10}\ \mathrm{nm}$

Question 1

Which of the following is an example of an intensive property?

Accepted Answer

Density

Question 2

A student measures the mass of a metal cylinder as 8.3 g and its volume as 2.5 cm$^3$. What is the density of the cylinder, reported with the correct number of significant figures?

Accepted Answer

$3.3\ \mathrm{g/cm^3}$

Question 3

Which of the following is the correct SI base unit for temperature?

Accepted Answer

Kelvin (K)

Question 4

Convert $23.5\ \mathrm{m}$ to nanometers ($\mathrm{nm}$).

Accepted Answer

$2.35 	imes 10^{10}\ \mathrm{nm}$

Question 5

Which of the following numbers has 3 significant figures?

Accepted Answer

0.00340

Question 6

A glass of milk holds $230\ \mathrm{mL}$. Express this volume in liters ($\mathrm{L}$).

Accepted Answer

$0.230\ \mathrm{L}$

Question 7

Which of the following is an exact number?

Accepted Answer

The number of centimeters in an inch ($2.54\ \mathrm{cm} = 1\ \mathrm{in}$)

Question 8

A student adds $2.345$ and $0.07$. What is the answer, reported with the correct number of decimal places?

Question 9

Which of the following is the correct relationship between cubic centimeters and milliliters?

Accepted Answer

$1\ \mathrm{cm^3} = 1\ \mathrm{mL}$

Question 10

A cube has sides of $2.5\ \mathrm{cm}$ and a mass of $5.0\ \mathrm{g}$. What is its density in $\mathrm{g/cm^3}$, rounded to the correct number of significant figures?

Question 11

Which of the following is the correct scientific notation for $0.000135$?

Accepted Answer

$1.35 	imes 10^{-4}$

Question 12

Which glassware would you use to deliver a specific, fixed volume of liquid most accurately?

Accepted Answer

Pipette

Question 13

A student multiplies $1.052$ (4 sig figs) by $0.53$ (2 sig figs). How many significant figures should the answer have?

Accepted Answer

2

Question 14

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

Accepted Answer

micro

Question 15

A temperature is measured as $25^\circ\mathrm{C}$. What is this temperature in Kelvin?

Accepted Answer

$298.15\ \mathrm{K}$

Question 16

Which of the following is a derived unit?

Accepted Answer

Liter

Question 17

Which of the following statements about significant figures is correct?

Accepted Answer

Leading zeros are not significant.

Question 18

A student needs to convert $1.63\ \mathrm{L}$ to $\mathrm{mL}$. What is the correct answer?

Accepted Answer

$1630\ \mathrm{mL}$

Question 19

Which of the following is the correct conversion factor to use when converting inches to centimeters?

Accepted Answer

$1\ \mathrm{in} = 2.54\ \mathrm{cm}$

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

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