Chem corner: unit 2 test bank

Determine the number of significant figures in the following measurement: 1. 1.250 mL

• 4

• 3

• 2

• 5

Determine the number of significant figures in the following measurement: 2. 0.0305 ms

• 1

• 2

• 3

• 4

Determine the number of significant figures in the following measurement: 3. 56,200 mL

• 5

• 3

• 4

• 6

Determine the number of significant figures in the following measurement: 4. 0.0030 s

• 4

• 2

• 3

• 5

Determine the number of significant figures in the following measurement: 5. 450. cm

• 3 significant figures

• 4 significant figures

• 5 significant figures

• 6 significant figures

Perform the following calculation and express your answer in correct units and number of sig figs: 6. 828.5 km x 4.0 km =

• 3300 km²

• 3314 km²

• 33140 km²

• 33000 km²

Perform the following calculation and express your answer in correct units and number of sig figs: 7. 6.18 x 10^10 cm^3 / 2.1 x 10^5 cm^2 =

• 2.94 x 10^5 cm

• 2.9 x 10^5 cm

• 3.0 x 10^5 cm

• 2.938 x 10^5 cm

Perform the following calculation and express your answer in correct units and number of sig figs: 8. 5.10 x 10^-7 m – 5.8 x 10^-7 m =

• 3.0 x 10^-8 m

• 3.0 x 10^-7 m

• 3.0 x 10^-6 m

• 3.0 x 10^-9 m

Perform the following calculation and express your answer in correct units and number of sig figs: 9. 3.875 kg / 1.5 L =

• 2.58 kg/L

• 2.6 kg/L

• 2.583 kg/L

• 2.5833 kg/L

Perform the following calculation and express your answer in correct units and number of sig figs: 10. 134.0 cm + 298.55 cm + 48.56 cm + 5.00 cm =

• 486.11 cm

• 486.1 cm

• 486 cm

• 487 cm