How many moles of potassium (K) atoms are in 3.04 grams of pure potassium metal?
0.0778 mol K
100
2 KClO3 ---> 2 KCl + 3 O2
1.50 mol of KClO3 decomposes. How many grams of O2 will be produced?
32.0 g/mol
100
LiOH + HBr --->LiBr + H2O
If you start with 10.0 grams of lithium hydroxide, how many grams of lithium bromide will be produced?
36.3 g
100
HgO ----> Hg+O2
How many moles of mercury are produced if 24.5 moles of mercury (II) oxide decompose?
24.5 moles
200
What is the empirical formula?
The simplest formula for a compound
200
2 KClO3 ---> 2 KCl + 3 O2
If 80.0 grams of O2 was produced, how many moles of KClO3 decomposed?
1.67 mol
200
2 H2 + O2 ---> 2 H2O
How many grams of H2O are produced when 2.50 moles of oxygen are used?
18.0 g/mol
200
Mg + 2 NaF--->MgF2 + 2 Na
If you start with 5.5 grams of sodium fluoride, how many grams of magnesium fluoride will be produced?
4.1 g
200
4NH3+5O2 --->4NO+6H20
How many moles of oxygen are needed to react with 4.6 moles of ammonia
184 moles
300
What are the reactants
The left side of the equation
300
Given 12 g of aluminum, how many moles do you have?
0.44 mol Al
300
How many grams are 10.78 moles of Calcium (Ca)?
432.1 g Ca
300
C2H4 + 3 O2--->2 CO2 + 2 H2O
If you start with 45 grams of ethylene (C2H4), how many grams of carbon dioxide will be produced?
140 g
300
2 KClO3 ---> 2 KCl + 3 O2
How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?
18.00 mols
400
What is Stoichiometry?
The calculation of quantitative relationships of the reactants and products in a balanced equation
400
Given 25 g of NaCl, how many moles do you have?
0.43 mol NaCl
400
2 H2 + O2 ---> 2 H2O
If 3.00 moles of H2O are produced and 48 grams of oxygen are consumed, how many grams of hydrogen gas must be used?
6.06 g
400
2 HCl + Na2SO4--->2 NaCl + H2SO4
If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced?
30 g
400
Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag
How many moles of Cu are needed to react with 3.50 moles of AgNO3?
1.75 moles
500
What will cause the reaction to stop?
The limiting reactant
500
Given 125 g ofH2SO4, how many moles do you have?
1.27 mol H2SO
500
Given 0.345 mol of water, how many grams would you have?
6.22 g H2O
500
Pentane C5H12 reacts with oxygen gas to produce carbon dioxide and water. How many grams of carbon dioxide will be produced by the reaction of 108.0 grams of pentane?
333 g
500
4 NH3 (g) + 5 O2 (g) ---> 4 NO (g) + 6 H2O (l)
When 1.20 mole of ammonia reacts, the total number of moles of products formed is: