Conversions Review

Conversions

100

How many grams are in 3.5 kg?

3500 g

200

Convert 0.450 L to mL

450 mL

300

Convert 3.2 moles of helium into particles. 1 mole = 6.022 x 10^23 particles

1.9 x 10^24 particles

400

Convert 450.89 cm to meters. 

4.5089 m

500

Convert 123,456 cm to inches. 1 in = 2.54 cm (Round to one decimal place)

48,604.7 inches

Multi-Step

100

Convert 0.75 km to mm

750,000 mm

200

How many seconds are in 2.5 hours?

9,000 s

300

Convert 2.50 pounds to grams. 

 1 lb = 16 oz

1 oz = 28.35 g

1,130 g

400

How many minutes are in 0.50 years?

262,600 minutes

500

How many days are equal to 7,200 minutes?

5 days

Sig Figs

100

How many sig figs are in 50,000 mL?

1

200

How many significant figures are in the measurement 0.00405 g?

3

300

How many sig figs are in 120.00 mL?

5

400

Round this number to 2 significant figures. 

0.007849

0.0078

500

Round this number to 6 significant figures. 1456.89432 g

1456.89 g

Scientific Notation

100

Express 0.000038 m in scientific notation.

3.8 x 10^-5 m

200

Write 1,040,000 g in scientific notation

1.04 x 10⁶ g

300

What is this number in standard decimal form? 6.02 x 10⁴ g

60,200 g

400

Express 0.00000078 meters in scientific notation

7.8 x 10^-7 m

500

Convert 4.1 x 10^-3 L into decimal form. 

0.0041 L