In a science demonstration, a teacher mixed zinc (zn) with hydrogen chloride (hcl) in a flask and quickly attached a balloon over the mouth of the flask. bubbles formed in the solution and the balloon inflated.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Which statement names the physical property of wood a. wood is softer than coal b. wood does not rust c. wood can rot d. wood can burn

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)