Vocab
A unit of measurement to quantify the amount of a substance
What is the mole?
The percent composition of ammonia (NH3)
What is 82.24% N and 17.76% H?
The moles of sodium fluoride in 125.7 g
What is 3 mol NaF?
The limiting reactant if 7 mol H2 react with 4 mol O2
2H2 + O2 --> 2H2O
What is H2?
The number of particles in exactly one mole of a pure substance
What is Avogadro's number?
The grams of oxygen in a 200g sample of carbon dioxide. (Carbon dioxide is 72.71% oxygen, by mass)
145.42g O
The number of moles of carbon dioxide needed to form 10 moles of glucose (C6H12O6)
6CO2 + 6H2O --> C6H12O6 + 6O2
What is 60 mol CO2?
The percent yield of a reaction given 42 g for the actual yield compared to a theoretical yield of 124 g.
What is 34% yield?
The conversion factor used to compare amounts of different substances using balanced coefficients
What is a mole ratio?
The percent composition of Na2S2O3
What is 29.08% Na, 40.56% S, and 30.36% O?
The number of atoms of aluminum needed to form 6.0 moles of hydrogen.
2Al + 6HCl --> 2AlCl3 + 3H2
What is 2.4 x 1024 atoms Al?
The limiting reactant if 46 g H2 reacts with 128 g O2
2H2 + O2 --> 2H2O
What is O2?
The amount of product that was made and measured in a reaction
What is the actual yield?
The grams of hydrogen in 50g of water
What is 5.60g of hydrogen?
The moles of sodium chloride produced from 80 g of sodium hydroxide.
HCl + NaOH --> NaCl + H2O
What is 2 mol NaCl?
The limiting reactant if 3.61 x 1024 molecules of H2 react with 4.82 x 1024 molecules of O2
2H2 + O2 --> 2H2O
What is H2?
The sum of the average atomic masses of a compound's elements
What is formula mass?
The percent composition of calcium phosphate
What is 38.76% Ca, 19.97% P, and 41.27% O?
The grams of water produced from the combustion of 22 kg of methane (CH4)
What is 49000 g H2O?
The percent yield given 212 g of sodium carbonate reacts with 109 g of hydrochloric acid and 58.5 g of carbon dioxide are produced.
Na2CO3 + 2HCl --> 2NaCl + H2O + CO2
What is 86.5% yield?