Question

Which mathematical relationship should you use to convert moles of a substance into grams? mass in grams = number of moles · molar mass in g/mol mass in grams=number of molesmolar mass in g/mol mass in grams=molar mass in g/molnumber of moles mass in grams = molecular weight · molar mass in g/mol

Answer 1

The molecular weight (g/mole) grams =moles * g/mole

Answer 2

Answer: Option (a) is the correct answer.

Explanation:

Number of moles is defined as mass of given substance in grams divided by molar mass of the substance in grams per mol.

Mathematically,     No. of moles = \frac{mass in grams}{Molar mass of substance}[/tex]

or,          Mass in grams = No. of molar mass × Molar mass of substance

Thus, we can conclude that mathematical relationship we should you use to convert moles of a substance into grams is mass in grams = number of moles · molar mass in g/mol.