Molar Mass, Unit Conversions, And Balancing Chemical Equations Review Question Preview (ID: 59018)


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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 moles
d) 2.409x10^24 molecules

How many moles of hydrogen gas (H2) are in the following chemical reaction: N2 + 3H2 → 2NH3
a) 2
b) 3
c) 5
d) 6

What is the molar mass of 1 mole of Potassium?
a) 30.97 amu
b) 30.97 g/mol
c) 39.10 amu
d) 39.10 g/mol

What is the molar mass of Sodium fluoride, (NaF)?
a) 22.99 g/mol
b) 41.99 g/mol
c) 19.00 g/mol
d) 45.98 g/mol

Correctly balance the following chemical equation: KClO3 → KClO4 + KCl
a) 3KClO3 → 4KClO4 + KCl
b) 4KClO3 → KClO4 + KCl
c) 4KClO3 → 3KClO4 + KCl
d) KClO3 → KClO4 + KCl

Correctly balance the following chemical equation: Al + HCl → AlCl3 + H2
a) 2Al + 6HCl → 2AlCl3 + 3H2
b) Al + 3HCl → AlCl3 + H2
c) Al + 2HCl → AlCl3 + H2
d) 2Al + 6HCl → 2AlCl

How many grams are in 11.90 moles of Chromium (Cr)?
a) 618.8g Cr
b) 0.23g Cr
c) 11.9g Cr
d) 1237.6g Cr

How many grams are in 0.020 moles of Beryllium iodide, (BeI2)?
a) 262.81g BeI2
b) 5.256 mol BeI2
c) 5.256g BeI2
d) 262.81 mol BeI2

Balance the following chemical equation: C2H6 + O2 → H2O + CO2
a) C2H6 + O2 → 3H2O + 2CO2
b) C2H6 + O2 → 2H2O + CO2
c) C2H6 + O2 → 3H2O + 2CO2
d) 2C2H6 + 7O2 → 6H2O + 4CO2

How many moles are in 68.00g of Copper (II) hydroxide, Cu(OH)2?
a) 97.57 mol Cu(OH)2
b) 0.697 mol Cu(OH)2
c) 6634.76 mol Cu(OH)2
d) 68.00 mol Cu(OH)2

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