Math of Chemistry

1000 grams= 1 kilogram. Convert 40 kilograms to grams

• 400
• 4000
• 40000
• 40

1 hour= 60 min, 1 min=60 sec. Convert 3 hours to seconds.

• 3600

• 7200

• 18000

• 10800

1 Kilometer=1000 Meters. Convert 2 kilometers to meters.

• 5000

• 3000

• 1000

• 2000

1 day= 24 hours. Convert 4 days to hours.

• 24 hours

• 96 hours

• 72 hours

• 48 hours

1 kilometer=1000 Meters. Convert 8000 meters to kilometers.

• 8 kilometers

• 8000 kilometers

• 800 kilometers

• 80 kilometers

Americans drink 5,604,000 gallons of sweet tea each day. How many liters is that? (1 gal = 3.79 L)

• 21,200,000 L

• 21,240,000 L

• 21,207,190.2 L

• 21,000,000 L

The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet? (3 ft = 1 yd)

• 0.867 ft

• 7.8 ft

• 8.07 ft

• 8.27 ft

The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?

• 32 people

• 32 minutes

• 12.5 minutes

• 12.5 people

You know 1000 mg = 1 g. Convert 2.5 grams into milligrams.

• 25 mg

• 25,000 mg

• 250 mg

• 2500 mg

How many kilograms of calcium are there in 173 pounds of calcium? (1 lb = 454 g; 1 kg = 1000 g)

• 1.10 kg

• 78.5 kg

• 110 kg

• 78500 kg