1. How many grams are there in 4.50 moles of Na2SO4 2. What is the volume of 13.20 grams of N2 at STP
3. What is the mass, in grams of 100.0 liters of O2 at STP
4. What is the mass in grams H2 in 7.52*10^24 molecules of H2
5. How many molecules are in 1.39 liters of CH4 at STP

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

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

What two categories of toxins were present in the air at dish,texas as a result of the gas pipelines that pass through the area