Quiz. Formula Weight and % Composition
• 1. Give the % of water in Ca(NO3)2 * 3 H20
• 2. In a 520 g sample of Ca(NO3)2 * 3 H20,
how much is Ca(NO3)2?
• 3. Give the % of water in B(OH)* 2 H2O
• 4. In a 80g sample, how much is B(OH)?
• 5. What is the mass of one mole of CaSO4?
• 6. What is the mass of 2.5 moles of CaSO4?
• 7. How many moles is 325g of CaSO4?
• 8. Which of the following compounds has
the highest percentage of Oxygen by mass?
• A. Mg(OH), B. Caso, C. K20 D. Ca(C2H302)2

PLEASE HELP WITH ANY