CHEMISTRY HOMEWORK.

Calculate the following quantities:

1. mass (g) of 1.73 mol CaH₂


2. moles of Mg(NO₃)₂ in 3.25 g


3. # of molecules in 0.245 mol CH₃OH


4. # of H atoms in 0.585 mol C₄H₁₀


5. mass (g) 2.50 x 10 (raised to -2) mol MgCl₂


6. moles of NH₄Cl in 76.8 g


7. # of molecules in 0.0772 mol HCHO₂


8. # of NO₃ - ions in 4.88 x 10 (raised to -3) mol Al (NO₃)₃