Same with these: How do you do them?

1.)What is the mass at 20 degrees Celsius of 5 liters of air?

2.)What is the volume in liters of a kilogram of ice at 0 degrees Celsius?

3.)What is the mass of a bar of aluminum measuring 1.0cm by 1.0cm by 10.0cm?

1 answer

1. density of air @ 20C = ?
mass air = volume x density

2. density ice = ?
mass ice = volume ice x density ice.
Substitute and solve for volume. If density ice is given in g/cc, remember to convert kg to grams. The answer will be in cc, convert to L.

3. volume bar = length x width x height in cc. Then mass = volume x density
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