What are the steps to solving these problems? i don’t need answers, just the steps on how to get the answers.

1. find the molecular mass of calcium citrate.

4. what is the mass of 8.94 x 10^21 molecules of ethanol (c2h5oh)?

5. how many formula units are in 926 g of febr3?

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Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4nh3 (g) + 5o2 (g) → 4no (g) + 6h2o (g) also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition: compound pressure at equilibrium nh3 65.1atm o2 31.3atm no 62.7atm h2o 65.8atm compound pressure at equilibrium nh3 65.3 atm o2 7.79 atm no 12.1 atm h2o 65.8 atm calculate the value of the equilibrium constant kp for this reaction. round your answer to 2 significant

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

Salt in oceans comes from and of rocks