Which compound, when added to a saturated solution of PbF2(s), will cause additional PbF2 to dissolve

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)