The Mole
6.022 x 1023
What is Avogadro's constant/number?
The molar ratio comes from this.
What is the balanced chemical equation?
This is how we can find the molar mass of a compound
What is the sum of the atomic masses of the elements from the periodic table?
15 g of H2 equals this mass of hydrogen atoms
What is 15 g?
This is the difference between the coefficients and the subscripts in a balanced chemical equation.
What is the coefficients represent the moles of molecules per reaction and the subscripts represent the moles elements per molecule?
The molar mass of platinum.
What is 195.08 g/mol?
The ratio of hydrogen gas to water in water synthesis
What is 2:2 or 1:1?
How many grams of NH3 can be produced from the reaction of 10 g of N2 and 10 g of H2?
N2 + 3H2 --> 2NH3
What is 12.1 g of NH3?
All chemical reactions must follow this law
What is the law of conservation of mass?
mass of reactants = mass of products
The reactant that is left over after a reaction stops.
What is the excess reactant?
6.25 moles of fluorine have this mass using this conversion
What is 6.25 mol Fl x 19.00g/1mol = 118.75g?
Creates the least amount of product. (also indicates which reaction actually happened)
What is the limiting reactant?
How many grams of H2 are needed to make 20 g of NH3?
N2 + 3H2 --> 2NH3
What is 3.6 g of H2?
The amount of grams of CO2 produced when 75 grams of carbon monoxide are burned in oxygen?
2CO + O2 --> 2CO2
What is 117.8 g CO2?
A reaction created 150 grams of products. However, we were expecting 200 grams. This is our percent yield.
What is 75% yield?
1.9 x 1022 atoms is this amount of moles using this conversion factor
What is 1.9 x 1022 atoms x 1 mol/6.022x1023atoms = 0.032 moles?
The amount of moles of NH3 that can be produced from 2.5 moles of N2 and 12 moles of H2.
N2 + 3H2 --> 2NH3
What is 5 mol NH3?
The amount of water produced from 9.5 moles of oxygen combined with 6.75 moles of hydrogen.
What is 121.6 g of water?
The amount of water produced from 200 g of O2 and 100 g of H2.
What is 225.3 g of water?
The amount of liters of CO2 produced when 25 liters of CO are burned in O2.
2CO + O2 --> 2CO2
What is 25 L of CO2?
3 moles of bromine gas at STP occupies this amount of space using this conversion factor.
What is 3 mol Br x 22.4 L / 1 mol = 67.2 L?
Mg + HCl --> MgCl2 + H2
The amount of moles of hydrogen gas produced from 4 moles of Mg and 4 moles of HCl. Also, the amount of excess reactant.
What is 2 mol of H2 created and 2 mol of Mg in excess?
Mg + HCl --> MgCl2 + H2
The amount in grams of hydrogen gas produced from 4 moles of Mg and 4 moles of HCl. Also, the amount of excess reactant.
What is 4.04 g of H2 and 48.62 g of Mg?
Mg + HCl --> MgCl2 + H2
The amount in grams of hydrogen gas produced from 14 g of Mg and 24 g of HCl. Also, the amount of excess reactant.
What is 0.68 g of H2 and 5.79 g of Mg?
The amount of CO2 produced when 30 L of oxygen are consumed with CO.
2CO + O2 --> 2CO2
What is 60 L of CO2?