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Molar Mass, Unit Conversions, And Balancing Chemical Equations Review
Test Description: Content related to Molar Mass, Unit Conversions, and Balancing Chemical Equations
Instructions: Answer all questions to get your test result.
1) What is the molar mass of 1 mole of Potassium?
A
30.97 g/mol
B
30.97 amu
C
39.10 amu
D
39.10 g/mol
2) What is the molar mass of Sodium fluoride, (NaF)?
A
41.99 g/mol
B
45.98 g/mol
C
22.99 g/mol
D
19.00 g/mol
3) Correctly balance the following chemical equation: KClO3 → KClO4 + KCl
A
KClO3 → KClO4 + KCl
B
4KClO3 → KClO4 + KCl
C
3KClO3 → 4KClO4 + KCl
D
4KClO3 → 3KClO4 + KCl
4) Correctly balance the following chemical equation: Al + HCl → AlCl3 + H2
A
2Al + 6HCl → 2AlCl3 + 3H2
B
2Al + 6HCl → 2AlCl
C
Al + 3HCl → AlCl3 + H2
D
Al + 2HCl → AlCl3 + H2
5) How many grams are in 11.90 moles of Chromium (Cr)?
A
11.9g Cr
B
1237.6g Cr
C
0.23g Cr
D
618.8g Cr
6) How many grams are in 0.020 moles of Beryllium iodide, (BeI2)?
A
5.256 mol BeI2
B
5.256g BeI2
C
262.81 mol BeI2
D
262.81g BeI2
7) Balance the following chemical equation: C2H6 + O2 → H2O + CO2
A
C2H6 + O2 → 2H2O + CO2
B
C2H6 + O2 → 3H2O + 2CO2
C
C2H6 + O2 → 3H2O + 2CO2
D
2C2H6 + 7O2 → 6H2O + 4CO2
8) How many moles are in 68.00g of Copper (II) hydroxide, Cu(OH)2?
A
6634.76 mol Cu(OH)2
B
0.697 mol Cu(OH)2
C
68.00 mol Cu(OH)2
D
97.57 mol Cu(OH)2
9) How many moles of hydrogen gas (H2) are in the following chemical reaction: N2 + 3H2 → 2NH3
A
2
B
3
C
6
D
5
10) How many molecules are in 4.0 moles of glucose (C4H12O6)? (Hint: Would Avogadro's Constant be useful?)
A
4.00x10^23 moles
B
4.00x10^23 molecules
C
2.409x10^24 molecules
D
2.409x10^24 moles
*select an answer for all questions
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