Numbers in Chemistry Review

How many significant figures are in the following number:

1.0060

• 4

• 5

• 2

• 6

Write the following in scientific notation:

0.0000332

What is 27.0 written in scientific notation?

• 2.7 x 10^(-1)

• 2.7 x 10^2

• 2.7 x 10^1

• 2.7

What is 3.45 x 10-3 represented in regular decimal form?

• 0.0345

• 0.00345

• 3450

• 34.5

How many significant figures are in the number 1.230?

How many significant figures are in the number 0.800?

How many significant figures are in 14,000?

• 7.87

• 7.9

• 7.875

• 8

wWhat is the answer for the following calculation with the appropriate number of significant figures?

27.0 x 2.5 =

• 6 x 10^2

• 60

• 67.5

• 68

Convert 15 kg to grams. Show answer below: