1. Convert 1.89 moles to molecules.
1. How many molecules are in 2.56 moles?
1. If you have 4.67x10^24 atoms, how many moles is this?
1. How many moles are in 2.55x10^23 molecules?
2. 7.95x10^30 molecules of CO2 weighs how many grams?
3. How many grams are in 4.73x10^29 molecules of PCl5?
4. If you have 2.65 grams of Mg3(PO4)2, how many formula units is this (treat formula units as atoms or molecules)?
5. How many molecules are in 4.93 grams of H2O?
6. What are the number of moles found in 4.55 grams of calcium nitride?
7. If you have 3.45 grams of ammonia (NH3), how many moles is this?
8. Sam wanted to perform a chemical reaction using 8.22 moles hydrogen gas and 4.11 moles of oxygen gas to
9. produce 8.22 moles of water. How many grams of each reactant are needed and how many grams of water are produced?
10. Matthew wanted to find the density of a substance that had 0.988 moles of CaCl2 dissolved in 345 grams of water and has a final volume of 350 mL. What is the density?