Honors Chemistry Unit 1 Review

How many sig figs are in 6400.0 m?

• 2

• 4

• 5

• 6

HOw many sig figs are in 12,000,500 yr?

• 3

• 6

• 7

• 8

What is 6.7 x 10^-4 expressed as a decimal number?

• 67 000

• 0.0006

• 0.00067

• 0.000067

What is 9.87 x 10¹ expressed as a decimal number?

• 0.0987

• 0.99

• 0.987

• 98.7

What is 1.8 x 10⁴ expressed as a decimal number?

• 18 000

• 180 000

• 1800

• 0.00018

Using the rules for sig figs, what is the answer to this math: 12.431 + 23.10 + 1.2 =

• 36.5

• 37

• 36

• 36.7

Using the rules for sig figs, what is the answer tot his math? 85.65 mL - 42.35 mL

• 43.3 mL

• 43.30 mL

Using the rules for sig figs, what is the answer to this math? 1700÷5.80 =

• 293.1

• 290

• 291

Using the rules for sig figs, what is the answer to this math? (149.5 - 103.5) x 1.08

• 49.68

• 49.6

• 49.7

• 50

How would you express 185 000 in proper scientific notation?

• 1.85 x 10⁵

• 1.85 x 10^-5