WorksheetsMole Concept Review G12
Total questions: 25
Worksheet time: 2hrs 31mins
What is the molar mass of H2O?
20.00 g/mol
16.04 g/mol
18.02 g/mol
22.99 g/mol
How many moles are in 25 grams of NaCl?
0.425 moles
2.5 moles
1.25 moles
0.75 moles
What is the mole ratio of H2 to H2O in the reaction 2H2 + O2 -> 2H2O?
1:1
2:1
1:2
3:1
If 2 moles of H2O are produced in 2H2 + O2 -> 2H2O? How many moles of O2 are required?
2
3
4
1
Calculate the number of moles in 50 grams of CO2.
0.5 moles
1.136 moles
0.25 moles
2.5 moles
What is the molar mass of CaCO3?
85.32 g/mol
100.09 g/mol
56.78 g/mol
120.45 g/mol
In the reaction 2NaOH + H2SO4 -> Na2SO4 + 2H2O, what is the mole ratio of salt to base?
3:1
2:1
1:2
1:1
How many grams are in 3 moles of H2O?
54.06 grams
36.04 grams
18.02 grams
72.08 grams
Calculate the number of moles in 100 grams of CH4.
3.14 moles
2.27 moles
0.5 moles
10 moles
Calculate the number of moles in 75 grams of N2.
1.5 moles
3.75 moles
2.5 moles
0.75 moles
If 3 moles of H2 are reacted, how many moles of NH3 are produced in the reaction N2 + 3H2 -> 2NH3?
2 moles
3 moles
4 moles
6 moles
6CO2 + 6H2O --> C6H12O6 + 6O2
What is the total number of moles of CO2 needed to make 2 moles of C6H12O6?
2.5
6
12
15
2 NaClO3 (s) --> 2NaCl (s) +3 O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
256 g of O2
576 g of O2
288 g O2
32 g O2
How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)3?
_Al +_HCl --> _H2 +_AlCl3
Which of the following statement are true about the formula of dinitrogen monoxide, N2O?
The relative molecular mass is 28.
One molecule of N2O consists of one nitrogen atom and one oxygen atom.
One mole of N2O contains 6.02 x 1023 atoms of nitrogen.
One mole of N2O consists of two moles of nitrogen atoms and one mole of oxygen atom.
Which chemical equations is balanced?
NaOH (aq) + H2SO4 (aq) → Na2SO4 (aq) +H2O (l)
Zn(NO3)2 (s) → ZnO (s) + 2NO2 (g) + O2(g)
Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)
CaCO3 (s) → CaO (s) + 2CO2 (g)
What is the meaning of Avogadro's number?
mass of one mole of a substance
pressure of one mole of a substance
number of particles in one mole of a substance
volume occupied by one mole of gas
How many grams are in 3.3 mol of Potassium Sulfide? (atomic mass: K = 39.1 g mol-1; S = 32.1 g mol-1)
364 g
454 g
238 g
132 g
What is the molarity (concentration) of 4 g of NaCl (Mr NaCl=58.45 g mol-1) in 3800 mL of solution?
0.018 M
0.0011 M
1.052 M
0.062 M
Molarity is measured in
moles per kg
mol per L
moles per kJ
moles per mL
How many grams of AgNO3 are needed to prepare 0.125 M solution in 250 mL of water? (Mr =169.87 g mol-1)
0.03 g
0.5 g
5.3 g
84.9 g
How many moles are in 36 grams of HCl?
0.5 moles
1.136 moles
0.25 moles
2.5 moles
