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WorksheetsRe-KAP Review
Total questions: 20
Worksheet time: 26mins
What is the chemical formula for Calcium Carbonate?
CaCO₃
CaCO₄
Ca(CO₃)₂
Ca(CO₄)₂
What is the name of the compound with the formula KNO₃?
Potassium Nitrate
Potassium Nitrite
Potassium Hydroxide
Potassium Sulfate
Which of the following is a balanced equation for the reaction between barium chloride and sodium sulfate?
BaCl₂(aq) + Na₂SO₄(aq) → BaSO₄(s) + 2NaCl(aq)
BaCl₂(aq) + Na₂SO₄(aq) → BaNa₂(s) + Cl₂SO₄(aq)
BaCl₂(aq) + Na₂SO₄(aq) → BaSO₄(aq) + NaCl₂(s)
BaCl₂(aq) + Na₂SO₄(aq) → BaCl₂(s) + Na₂SO₄(aq)
A container holds 3.01 x 1023 molecules of Neon gas. What is the mass of neon gas present in the container?
10 g
1 g
5 g
0.5 g
Balance the following reaction: ____NaClO₃(s) → ____NaCl(s) + ____O₂(g)
2, 2, 3
1, 1, 2
2, 1, 3
1, 2, 3
If you have 3.01 x 1023 molecules of nitrogen, how many moles of nitrogen do you have? (Avogadro’s number = 6.02 x 1023)
0.5 moles
2 moles
5 moles
0.05 moles
If you have 7 moles of helium, what is the mass of helium? (Molar mass of He = 4 g/mol)
28 g
14 g
7 g
21 g
What is the name of the compound with the formula S₃F₆?
Trisulfur Hexafluoride
Sulfur Hexafluoride
Disulfur Hexafluoride
Trisulfur Tetrafluoride
Which of the following best describes a balanced chemical equation?
The number of atoms of each element is the same on both sides
The number of molecules is the same on both sides
The number of compounds is the same on both sides
The number of electrons is the same on both sides
Which of the following is a correct name-formula pair?
Dinitrogen Pentoxide - N₂O₅
Calcium Fluoride - CaCl₂
Iron (III) Oxide - FeO
Nickel (II) Phosphate - NiPO₃
Which of the following is a product in the reaction: CH₄ + O₂ → _______ + _______?
H₂O
NH₃
H₂
O₃
What is the correct name for S₂F₄?
Disulfur Tetrafluoride
Sulfur Tetrafluoride
Trisulfur Tetrafluoride
Disulfur Hexafluoride
A sample of an unknown hydrocarbon contains 82.7 carbon and 17.3% hydrogen.
What is the empirical formula?
C2H5
CH3
C3H6
C4H10
If you have 1 mole of O₂, how many molecules do you have?
6.02 x 10²³
1.00 x 10²⁴
3.14 x 10²²
2.00 x 10²³
What is the name of this Compound?
CuS
Copper (I) sulfide
Copper (II) sulfide
Copper sulfide
Copper (IV) sulfide
What is the name of this Compound?
Cu2O
Copper (I) oxide
Copper (II) oxide
Copper oxide
Copper (IV) oxide
Which of the following is the correct formula for Magnesium Sulfate?
MgSO3
Mg2SO4
MgSO4
Mg2S04
Which of the following is the correct formula for Calcium Nitrate?
Ca(NO3)2
CaNO3
Ca2NO3
Ca(NO2)2
Determine the empirical formulas for compounds with the following percent compositions:
15.8% carbon and 84.2% sulfur
CS4
CS
CS2
C2S
What is the empirical formula of a compound containing 40.0% sulfur and 60.0% oxygen by mass?
SO2
SO3
S2O
SO
