Question

to convert from grams to number of molecules, you need to use: answer: a avogadros number b molar mass c density d both a and b

Explanation:

To convert grams to molecules, first use molar mass to convert grams to moles (grams ÷ molar mass = moles), then use Avogadro’s number ($6.022×10^{23}$) to convert moles to molecules (moles × Avogadro’s number = molecules). So both A and B are needed.

Answer:

D. both A and B