CP Chem Ch. 1 Review

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

How many significant figures does the following number have: 100.3

• 4
• 3
• 5
• 2

How many significant figures does the following number have: 1740200

• 2
• 1
• 3
• 5

Calculate 5.50 cm + 5.50 cm

• 11 cm
• 11.0 cm
• 11.00 cm
• 11.000 cm

Calculate 12.34 + 1.234 + 0.1234

• 13.6974
• 13.697
• 13.70
• 13.7

How many significant figures does 1.90 × 10^8 have?

• 3
• 4
• 6
• 8

Round 720.36 to two sig figs

• 72
• 73
• 720
• 720.00

The expression of 5008 km in scientific notation is ____.

• 5.008 x 10³ km
• 50.08 X 10^-4 km
• 5.008 x 10^-3 km
• 5.008 x 10⁴ km

What is the density of an object having a mass of 8.0 g and a volume of 25 cm³?

• 0.32 g/cm³
• 2.0 g/cm³
• 3.1 g/cm³
• 200 g/cm³

What is the volume of 45.6 g of silver if the density of silver is 10.5 g/mL?

• 0.23 mL
• 4.34 mL
• 479 mL
• none of the above