Unit Test — Unit test Answers
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Henry divides 1.060 g by 1.0 mL to find the density of his water sample. How many significant figures should he include in the density value that he reports?
A
oneB
twoC
threeD
four22
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Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron?
A
A mole of iron has more atoms.B
They both have the same mass.C
A mole of magnesium has more mass.D
They both have the same number of atoms.23
William adds two values, following the rules for using significant figures in computations. He should write the sum of these two numbers by using
A
the same number of decimal places as the least precise value.B
the same number of decimal places as the most precise value.C
a range of the number of significant figures in the two values.D
an average of the number of significant figures in the two values.24
Andi performs the calculation that is shown below.How should the answer be reported using the correct number of significant figures?
A
3.59B
3.591C
3.6D
425
What is the molar mass of CHCl3?
A
48.47 g/molB
83.92 g/molC
119.37 g/molD
121.39 g/molDid you find these answers helpful?
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