Total mass of h2o2 in 20 grams of an aqueous h2o2 solution

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

Which of the following electromagnetic waves can create ions?

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)