Unit Test — Unit test Answers
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Avogadro’s number was calculated by determining the number of atoms in
A
12.00 g of carbon-12.B
14.00 g of carbon-12.C
12.00 g of oxygen.D
14.00 g of oxygen.22
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What is the molar mass of fluorine, F2?
A
9.00 g/molB
18.00 g/molC
19.00 g/molD
38.00 g/mol23
The equation shows the reaction between zinc metal and hydrochloric acid.Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g)What is the theoretical yield of hydrogen gas if 5.00 mol of zinc are added to an excess of hydrochloric acid?
A
5.05 gB
10.1 gC
182 gD
682 g24
Which statement correctly describes the actual yield and the theoretical yield of a reaction?
A
The actual yield is calculated from the reactant amounts, but the theoretical yield must be measured for each instance of a reaction.B
The actual yield is calculated from the amount of the limiting reactant, and the theoretical yield is calculated from the amount of the excess reactant.C
The actual yield depends on the reaction conditions, but the theoretical yield varies only with reactant amounts.D
The actual yield represents the maximum yield possible, and the theoretical yield assumes perfect reaction conditions.25
Which type of reaction is NaCl + AgNO3 → NaNO3 + AgCl?
A
synthesisB
decompositionC
oxidationD
replacementDid you find these answers helpful?
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