Question 1

If 15.0 mL of a metal has a mass of 103.0 g, what is the density of the metal?

Accepted Answer

Density is calculated by dividing mass by volume. Here, 103.0 g / 15.0 mL = 6.87 g/mL.

Question 2

The density of gold is 19.3 g\mL. If the current price of gold is $56.75 per gram, what is the volume of a nugget of gold worth $150.00?

Accepted Answer

E

Question 3

Which of these represents the SI prefix for mega (M)?

Accepted Answer

B

Question 4

How many significant figures are there in the number 10,100?

Accepted Answer

The number 10,100 has three significant figures: 1, 0, and 1. The trailing zeros are not considered significant unless specified by a decimal point.

Question 5

Calculate the density with the correct number of significant figures of a 50.0 g sample of mercury with a volume of 3.66 mL.

Accepted Answer

The answer of Calculate the density with the correct number...

Question 6

Calculate the density to the correct number of significant figures of a 100.0 g sample of mercury which occupies a volume of 7.36 cm³.

Accepted Answer

Density is calculated as mass divided by volume. The mass is 100.0 g and the volume is 7.36 cm³, so the density is 100.0 g / 7.36 cm³ = 13.58695652 g/cm³. Rounding to the correct number of significant figures (3, based on the volume), the density is 13.6 g/cm³, which matches choice A when rounded to 4 significant figures.

Question 7

The diameter of the nucleus of an atom is approximately 1 × 10^{− 13} meters. If 1 nm is equal to 10 Angstroms, what is the diameter of the nucleus in Angstroms? (1 nm = 1 x 10^{− 9} meter)

Accepted Answer

The answer of The diameter of the nucleus of an...

Question 8

Determine the volume occupied by 1.5 g of ethyl alcohol. The density of ethyl alcohol is 0.789 g\mL.

Accepted Answer

The answer of Determine the volume occupied by 1.5 g...

Question 9

Which of these represents the SI prefix for centi (c)?

Accepted Answer

The SI prefix for centi (c) is 10⁻², which means one hundredth.

Question 10

Chloroform is a commonly used anesthetic with a density of 1.483 g\mL. Determine the volume of chloroform needed to deliver a 9.37 g sample of the anesthetic.

Accepted Answer

The answer of Chloroform is a commonly used anesthetic with...

Question 11

When adding and subtracting, the number of significant figures in the answer is determined by _____.

Accepted Answer

When adding or subtracting, the result should be reported with the same number of decimal places as the measurement with the least number of decimal places (least precise number).

Question 12

Which of these represents the SI prefix for micro ( μ )?

Accepted Answer

The SI prefix for micro (μ) represents a factor of 10^-6.

Question 13

When multiplying and dividing, the number of significant figures in the answer is determined by _____.

Accepted Answer

When multiplying or dividing, the number of significant figures in the result is determined by the number with the fewest significant figures in the calculation.

Question 14

Which is the standard SI unit for mass?

Accepted Answer

The standard SI unit for mass is the kilogram.

Question 15

Which is the correct SI unit for time?

Accepted Answer

The SI unit for time is the second.

Question 16

Determine the mass in grams of a gold sample which occupies a volume of 16.39 mL? Gold has a density of 19.3 g\mL.

Accepted Answer

The mass of the gold sample can be calculated using the formula: mass = density × volume. Substituting the given values, mass = 19.3 g/mL × 16.39 mL = 316.327 g, which rounds to 316 g.

Question 17

Convert 89.5 meters to millimeters.

Accepted Answer

To convert meters to millimeters, multiply by 1,000 (since 1 meter = 1,000 millimeters). Thus, 89.5 meters = 89,500 millimeters, which is 8.95 × 10^4 mm.

Question 18

Which of the following is not true?

Accepted Answer

1 cm is equal to 0.01m or 1/100m, so it is not possible for 1 cm to equal 100m.

Question 19

Which is the standard SI unit for length?

Accepted Answer

The standard SI unit for length is the meter.

Question 20

How many significant figures are there in the number 10.00?

Accepted Answer

The number 10.00 has four significant figures: the '1', the '0', and the two zeros after the decimal point, which indicate precision.

Quiz 2: The Chemists Toolbox

If 15.0 mL of a metal has a mass of 103.0 g, what is the density of the metal?

The density of gold is 19.3 g\mL. If the current price of gold is $56.75 per gram, what is the volume of a nugget of gold worth $150.00?

Which of these represents the SI prefix for mega (M) ?

How many significant figures are there in the number 10,100?

Calculate the density with the correct number of significant figures of a 50.0 g sample of mercury with a volume of 3.66 mL.

Calculate the density to the correct number of significant figures of a 100.0 g sample of mercury which occupies a volume of 7.36 cm³.

The diameter of the nucleus of an atom is approximately 1 × 10^{− 13} meters. If 1 nm is equal to 10 Angstroms, what is the diameter of the nucleus in Angstroms? (1 nm = 1 x 10^{− 9} meter)

Determine the volume occupied by 1.5 g of ethyl alcohol. The density of ethyl alcohol is 0.789 g\mL.

Which of these represents the SI prefix for centi (c) ?

Chloroform is a commonly used anesthetic with a density of 1.483 g\mL. Determine the volume of chloroform needed to deliver a 9.37 g sample of the anesthetic.

When adding and subtracting, the number of significant figures in the answer is determined by _____.

Which of these represents the SI prefix for micro ( μ ) ?

When multiplying and dividing, the number of significant figures in the answer is determined by _____.

Which is the standard SI unit for mass?

Which is the correct SI unit for time?

Determine the mass in grams of a gold sample which occupies a volume of 16.39 mL? Gold has a density of 19.3 g\mL.

Convert 89.5 meters to millimeters.

Which of the following is not true?

Which is the standard SI unit for length?

How many significant figures are there in the number 10.00?

Quiz 2: The Chemists Toolbox

If 15.0 mL of a metal has a mass of 103.0 g, what is the density of the metal?

The density of gold is 19.3 g\mL. If the current price of gold is $56.75 per gram, what is the volume of a nugget of gold worth $150.00?

Which of these represents the SI prefix for mega (M) ?

How many significant figures are there in the number 10,100?

Calculate the density with the correct number of significant figures of a 50.0 g sample of mercury with a volume of 3.66 mL.

Calculate the density to the correct number of significant figures of a 100.0 g sample of mercury which occupies a volume of 7.36 cm3.

The diameter of the nucleus of an atom is approximately 1 × 10 − 13 meters. If 1 nm is equal to 10 Angstroms, what is the diameter of the nucleus in Angstroms? (1 nm = 1 x 10 − 9 meter)

Determine the volume occupied by 1.5 g of ethyl alcohol. The density of ethyl alcohol is 0.789 g\mL.

Which of these represents the SI prefix for centi (c) ?

Chloroform is a commonly used anesthetic with a density of 1.483 g\mL. Determine the volume of chloroform needed to deliver a 9.37 g sample of the anesthetic.

When adding and subtracting, the number of significant figures in the answer is determined by _____.

Which of these represents the SI prefix for micro ( μ ) ?

When multiplying and dividing, the number of significant figures in the answer is determined by _____.

Which is the standard SI unit for mass?

Which is the correct SI unit for time?

Determine the mass in grams of a gold sample which occupies a volume of 16.39 mL? Gold has a density of 19.3 g\mL.

Convert 89.5 meters to millimeters.

Which of the following is not true?

Which is the standard SI unit for length?

How many significant figures are there in the number 10.00?

Calculate the density to the correct number of significant figures of a 100.0 g sample of mercury which occupies a volume of 7.36 cm³.

The diameter of the nucleus of an atom is approximately 1 × 10^{− 13} meters. If 1 nm is equal to 10 Angstroms, what is the diameter of the nucleus in Angstroms? (1 nm = 1 x 10^{− 9} meter)