Question

What is the molecular mass of gold, Au?

Answer
What is the molecular mass of gold, Au?

Question at position 5
5

Numeric
6.6 points



Question at position 5
What is the molecular mass of iron (III) oxide, Fe2O3?

Answer
What is the molecular mass of iron (III) oxide, Fe2O3?

Question at position 6
6

Numeric
6.6 points



Question at position 6
What is the molecular mass of silver (I) nitrate, AgNO3?

Answer

Answer 1

- Gold (Au, atomic mass): 196.97 g·mol⁻¹ (≈196.97 u)

- Iron(III) oxide (Fe2O3): 2×55.845 + 3×15.999 = 159.69 g·mol⁻¹

- Silver(I) nitrate (AgNO3): 107.8682 + 14.007 + 3×15.999 = 169.87 g·mol⁻¹