Question

Which of the following conversions does the value of the conversion factor depend upon the formula of the substance?

a. moles of any substance to number of particles.
b. mass of any substance to moles.
c. volume of gas (STP) to moles.
d. density of gas (STP) to molar mass.

Answer 1

Conversion factor 'b. mass of any substance to moles' depends on the molar mass determined by the substance's formula, which makes it unique for each substance.

Step-by-step explanation:

The conversion factor that depends on the formula of the substance is b. mass of any substance to moles. This is because the mass of a substance is converted into moles using the molar mass of that substance, which is determined from its formula. The molar mass is unique to each substance and is expressed in grams per mole. For example, the molar mass of water (H2O) is 18.015 g/mol, because it has 2 moles of hydrogen atoms (about 1.008 g/mol each) and 1 mole of an oxygen atom (about 15.999 g/mol).

Other conversions, such as moles of any substance to number of particles, volume of gas (STP) to moles, and density of gas (STP) to molar mass, do not depend on the chemical formula because they rely on constants like Avogadro's number and the molar volume of a gas at STP to complete the conversion.

Answer 2

Answer:mass of any substance to moles.

Step-by-step explanation:

The conversion of mass to moles depends on the formula of the compound because the mass of the substance is obtained from the formula of the compound. For example. The formula of sodium chloride NaCl, there is one atom of sodium (Relative atomic mass 23) and one atom of chlorine (relative atomic mass 35.5) hence, 1 mole of NaCl has a mass of 58.5g. This becomes the mass to mole conversion factor for NaCl obtained from its formula.