Significant Figure Qualifying Quiz T1 (you need 100% on this to access the Significant Figures Credit Quiz) Flashcards

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general chemistry ii
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1

The number 0.230 has ____ significant figures.

  • 1
  • 2
  • 3
  • 4
  • 5

3

  • Hint: Leading zeroes are never significant, trailing zeros are significant if there is a decimal point in the number.

2

What is the answer to the following equation with correct significant figures?

15000 x 1.26570 = ______

  • 20000
  • 18985.5
  • 18990
  • 19000
  • 18986

19000

  • Hint: With multiplication, the number of significant figures in the answer is given by the smallest number of significant figures.

3

What is the answer to the following equation with correct significant figures?

234 + 1.26 = ______

  • 234
  • 235.2
  • 235
  • 235.3
  • 235.26

235

  • Hint: With addition, the number of significant figures in the answer is given by the smallest number of decimal places.

4

What is the answer to this conversion problem, with correct significant figures?
Convert 13.4 oC to K (K = 273.15 + C).

  • 287 K
  • 290 K
  • 286.55 K
  • 286.6 K
  • 286.5 K

286.6 K

  • Hint: This is a temperature conversion problem, so we need to use addition rules. The answer needs as many decimal places as what you are starting with.

5

The number 25.00 has ____ significant figures.

  • 1
  • 2
  • 5
  • 3
  • 4

4

  • Hint: Leading zeroes are never significant, trailing zeros are significant if there is a decimal point in the number.

6

What is the answer to the following equation with correct significant figures?

234.1 + 1.26 = ______

  • 235.36
  • 235
  • 235.3
  • 235.4
  • 236

235.4

  • Hint: With addition, the number of significant figures in the answer is given by the smallest number of decimal places.

7

What is the answer to this conversion problem, with correct significant figures?
Convert 5.000 m to cm

  • 500.000 cm
  • 500 cm
  • 500.00 cm
  • 500. cm
  • 500.0 cm

500.0 cm

  • Hint: The answer needs as many significant figures what you start with.

8

The number 2346 has ____ significant figures.

  • 1
  • 2
  • 3
  • 4
  • 5

4

  • Hint: All non-zero digits are significant.

9

What is the answer to the following equation with correct significant figures?

0.23400 x 1.267000 = ______

  • 0.296478
  • 0.29648
  • 0.297
  • 0.30
  • 0.2965

0.29648

10

What is the answer to this conversion problem, with correct significant figures?
Convert 5.0 lb to g

  • 2270 g
  • 2267.96 g
  • 2267.962 g
  • 2268 g
  • 2300 g

2300 g

  • Hint: The answer needs as many significant figures what you start with.