Question

which of the following best describes the purpose of converting moles to mass?
a. to determine the temperature of a substance
b. to find the density of a substance
c. to identify the color of the substance
d. to measure the amount of a substance in grams

Explanation:

• Moles are a unit of amount of substance. The formula to convert moles ($n$) to mass ($m$) is $m = n\times M$, where $M$ is the molar mass (in g/mol). This conversion directly gives the mass of the substance in grams.
• Temperature is measured using thermometers and is not related to mole - mass conversion.
• Density ($

ho=\frac{m}{V}$) requires volume information in addition to mass (which could potentially come from mole - mass conversion, but the main purpose of mole - mass conversion is not density calculation).

• Color is a physical property that cannot be determined from mole - mass conversion.

Answer:

d. To measure the amount of a substance in grams