Convert to moles: show work 1. 6.6g (nh4)2so4 2. 4.5kg ca(oh)2 3. 25g cao 4. 25g fe(no3)3 . 6h2o 5. 25g k2cro4

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles