AnswersCR SS Chemistry S2 201819 2026Scientific Notation and Significant Figures

Scientific Notation and Significant Figures Answers

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1
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6,840,000,000 m

A
68.4 x 108 m
B
6.84 x 108 m
C
6.84 x 10-9 m
D
6.84 x 109 m
2
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B =

A
19
B
21
C
23
3

C =

A
6.038
B
7.82
C
186.02
4

D =

A
21
B
23
C
44
5

0.000000000143 g

A
-1.43 x 1010 g
B
1.43 x 10-10 g
C
14.3 x 1010 g
D
14.3 x 10-10 g
6

A =

A
0.018
B
1.8
C
180
7

31.580 + 4.26 =

A
35.8
B
35.84
C
35.840
8

1.0250 - 0.00063 =

A
1.02
B
1.0244
C
1.02437
9

(6.022 × 1023) × 2.58 =

A
1.55 × 1024
B
1.554 × 1024
C
1.5537 × 1024
10

2.000 (35.35) =

A
70
B
71
C
70.70
11

9.0 + 2.000 (35.35) =

A
80
B
79.7
C
79.70

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