Chapter 9 Chemistry
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8 Terms
What quantity is equal to one mole of Si?
The atomic mass in grams.
What is equivalent to Avogadro’s number?
The number of atoms in 16.00 g of O-16.
What is the molar mass of a compound?
The sum of the atomic masses of its atoms.
What is the formula of calcium chloride hexahydrate?
CaCl2 · 6H2O.
In the reaction 4NH3 + 5O2 → 4NO + 6H2O, how many moles of H2O are formed from 2.0 moles of NH3?
3.0 mol.
What is the number of moles of ammonia produced in the reaction N2 + 3H2 → 2NH3 when 10 moles of hydrogen are used?
6.7 mol.
In the reaction 2H2 + O2 → 2H2O, how much mass of oxygen reacts with 4.0 grams of hydrogen to produce 36.0 grams of water?
32.0 g.
What is the number of moles in 150 grams of potassium phosphate?
0.71 mol.