Question

What is the mass of 4.50 moles of silver sulfate?

Answer 1

The mass of `"4.50"` moles of silver sulfate is `1.40xx10^3"g"`.

Explanation:

Molar mass is the mass of one mole of a substance. One mole of silver sulfate `("Ag"_2"SO"_4")` is `"311.792 g/mol"`.
https://www.ncbi.nlm.nih.gov/pccompound/?term=silver+sulfate

Multiply the given moles by the molar mass.

`4.50 color(red)cancel(color(black)("mol Ag"_2"SO"_4))xx(311.792"g Ag"_2"SO"_4)/(color(red)(cancel(color(black)("mol Ag"_2"SO"_4))))="1400 g Ag"_2"SO"_4=1.40xx10^3"g"` (rounded to three significant figures)