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Chemistry Quiz > Significant Figures in Multiplication and Division > Flashcards

Significant Figures in Multiplication and Division Flashcards

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1
Q

Five significant figures will be present in the volume of a sphere if the radius of the sphere is 3.016 m. (Value of pi is 3.14)
True or False?

A

False

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2
Q

Perform the following calculation and give the answer with the correct number of significant figures: 10.888×44.

A

480

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3
Q

Calculate 152.8/2.0 with the correct number of significant figures.

A

76

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4
Q

Calculate the following using proper number of significant figures:

0.0702÷1.35

A

0.0520

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5
Q

A sample of nickel weighs 7.5425 g and has a density of 8.8 g/cm3. What is the volume with the correct number of significant figures?

A

0.86cm3

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6
Q

A is 3600 m away from B. Jack spent 720.0 s running from A to B. What is Jack’s average speed? (Average speed = Distance/Time)

A

5

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7
Q

Assume an object A with mass of 66.789 g and a volume of 10.1 mL. What is its density?

A

6.61

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8
Q

Consider a block G with mass of 49.231 g and a volume of 23.8 mL. What is its density? (Density = mass ÷ volume)

___ g/mL

A

2.07

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9
Q

The dimensions of a box are 4.5 cm wide by 5.750 cm long by 1.50 cm tall. What is the volume of the box, taking significant figures into account?

______ cm3

A

39

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10
Q

The density of liquid Z is 0.9237 g/mL. A student masses a cup with a sample of liquid Z in it and finds the mass to be 50.7 g. The mass of the cup alone is 15.92 g. What is the volume of liquid Z in the cup? (Volume = mass ÷ density)

___ mL (Round your answer to 3 significant figures)

A

37.7

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11
Q

The dimensions of a water tank are 1.0 m wide by 3.25 m long by 1.50 m tall. What is the volume of the water tank, taking significant figures into account?

___ m3

A

4.9

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12
Q

The density of liquid A is 1.0240 g/mL. A cup with a sample of liquid A in it weighs to be 45.66 g. The mass of the cup alone is 12.32 g. What is the volume of liquid A in the cup? ___ mL

A

32.56

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13
Q

The dimensions of a cuboid shape cupboard are 1.31 m wide by 0.9 m long by 1.70 m tall. What is the volume of the cupboard, taking significant figures into account?

___ m3

A

2

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14
Q

Assume an object A with mass of 36.240 g and its density is 5.40 g/mL. What is its volume?

A

6.71

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15
Q

Perform the following calculation and give the answer with the correct number of significant figures: 10.888×44.

A

480

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16
Q

The product of 173.06×0.21 should be reported as _____ by using proper number of significant figures.

A

36

17
Q

What is 4.07 cm×2.3 cm, rounded to the correct number of significant figures?

A

9.4cm2

18
Q

What is 155.4 g/8.70 mL, rounded to the correct number of significant figures?

A

17.9g/mL

19
Q

The mass of a solid substance is 21.1164 g. If the volume of the solid substance is 19.9 cm3, calculate the density of the substance with the correct number of significant digits.

A

1.06g/cm3

20
Q

If we divide a number having 5 significant digits by another number having 3 significant digits, then the result will have 5 significant digits.

True or False?

A

False

21
Q

The number of significant figures in the expression 46.00745.0 is two.
True or False?

A

False

22
Q

After rounding off correctly, the product of 3.000 cm×30.0 cm is:

A

9.00x10^1cm2

23
Q

The principle involved in working with ____
and _____
is that the answer should be rounded to the same number of significant figures as the measurement with the lowest number of significant figures.

A

Multiplication

Division

24
Q

Calculate the number of significant figures up to which (28.2−21.2)(1.79×106)1.62 will be expressed.

A

2

25
Q

Complete the sentence using the words units, values or quantities.
The ___
are multiplied together just as the numbers in multiplication and division problems.

A

units

26
Q

The number of significant figures in the product of 4.0007×4.0 is 2.
True or False?

A

True

27
Q

The answer for a multiplication or division operation must have the same number of significant figures as the factor with the least number of significant figures.

True or False?

A

True

28
Q

In the following expression 0.012180x0236, the answer should be reported in three significant figures.

A

True

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