Chemistry Ch. 2

Determine the number of sig figs in the following measurement: 
0.036653 m

• 7
• 5
• 2
• 0

Determine the number of sig figs in the following measurement: 
72,100 g

• 5
• 3
• 6
• 4

Determine the number of sig figs in the following measurement: 
3,000 mm

• 1
• 4
• 2
• 3

Determine the number of sig figs in the following measurement: 
0.00300

• 3
• 6
• 1
• 5

Round the following number off to the number of sig figs shown in parentheses:
72,100 (1)

• 70,000
• 7
• 70
• 72,000

Round the following number off to the number of sig figs shown in parentheses:
529.78 (3)

• 530
• 529
• 5.30 x 10²
• 5.3 x 10²

Calculate the answer to the following problem and round the final answer to the correct number of sig figs:
24.567 + 0.04478 =

• 24.61178
• 24.612
• 24.611
• 24.61

Express the following number in scientific notation: 
0.00075

• 7.5 x 10^-4
• 7.5 x 10⁴
• 7.5 x 10³
• 7.5 x 10^-3

Express the following number in scientific notation: 
18,000,000

• 1.8 x 10⁷
• 18 x 10⁶
• 1.8
• 1.8 x 10^-7

Calculate the answer to the following problem and round the final answer to the correct number of sig figs:
4.627 / 0.00371 = 

• 1247.169811
• 1250
• 1247
• 1240