Font size
WorksheetsStoicheometry Quiz
Total questions: 10
Worksheet time: 48mins
N2 + H2 → NH3
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
6
2
3
1
Cl2 + 2KBr → Br2 + 2KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)? (show work)
KBr molar mass = 119.002 g/mol
KCl molar mass = 74.551 g/mol
B2H6 + O2 --> HBO2 + H2O
What mass of O2 will be needed to burn 36.1 g of B2H6? (show work)
B2H6 molar mass = 27.67 g/mol
O2 molar mass = 32.00 g/mol
13.8 g O2
3.86 mol of O2
125.2 g O2
108.3 g O2
CaC₂(s) + H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)
1,2,2,2
1,2,1,1
2,1,1,1
2,1,2,1
Write a Balanced Equation
Panic
Write an Unbalanced Equation
Avogadro's Number
CH4 + 2H2O --> CO2 + 4H2
What is the limiting reactant when 20g CH4 react with 15g H2O? (show work)
CH4 molar mass = 16.042 g/mol
H2O molar mass = 18.02 g/mol
Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield. (show work)
1.16%
116%
85%
76%
50g of Silver nitrate reacts with 8g of copper in a single displacement reaction. If this was done in the lab and we recovered 24.82g of silver from the reaction, what is the percent yield? (show work)
Silver nitrate molar mass = 169.87 g/mol
Copper nitrate molar mass = 187.57 g/mol
The ____ in a balanced chemical reactions gives the MOLE RATIO used in stoichiometry problems.
coefficients
reactants
subscripts
products
In a lab where students reacted copper with silver nitrate. Silver, a product, was dried and massed at 8.3g. The accepted value is 9.0g, what is the percent error for this experiment? (show work)
