The formula that only shows the ratio of one atom to another is called the empirical formula.
Answer:
The answer to the question is C
48.3 g AgNO3 / 169.9 g/mol = 0.284 moles AgNO3
0.284 mol AgNO3 X (1 mol Ag2CrO4/2 mol AgNO3) = 0.142 mol Ag2CrO4
0.142 mol Ag2CrO4 X 331.7 g/mol = 47.1 g Ag2CrO4
Volume= Mass/ Density= 20/184
= 0.108 cubic cm