Write the formula for the following set of ions: NH41+, N3- Your

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. trial 1: trial 2: data mass of empty crucible with lid trial 1: 26.688 trial 2: 26.681 mass of mg metal, crucible, and lid trial 1: 26.994 trial: 2 26.985 mass of mgo, crucible, and lid trial 1: 27.188 trial 2: 27.180