1f 600.0 grams HF reacts with excess SiO2, how many grams of H20 are produced? Use the following molar masses: HF = 20.01 g
H2O = 18.02 g
1 SiO2 (s) + 6 HF (O→ 1 HzSiF6 (aq) + 2 H20 (1)

To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.