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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Tom291 Tom291
wrote...
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11 years ago
Calculate the mass ratio of the following properties for 1.0 kg of air versus 1.0 kg of iron at 25 degrees Celsius:
a) Mass
b) Volume
c) Density
Can you also please explain how you got the answer? Thanks!
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wrote...
#1
11 years ago
that will always one.. you don't have to learn chemistry for that.. just go through class 2 math book once!
wrote...
#2
11 years ago
a) Mass 1kg / 1kg = 1
===================
c) Density from the CRC handbook
air = 0.00161 grams / ml
Iron= 7.87 g/ml

density ratio air/iron = 0.00161 air / 7.87 iron = 2.05 e-4
density ratio iron / air = 7.87 iron / 0.00161 air = 4890
==========================

b) Volume
iron: 1000 g @1 ml/7.87 g = 127 ml
air: 1000g @  1ml / 0.00161 g = 621,000 ml

volume ratio : air/iron = 621,000 / 127 = 4890
volume ratio : iron to air = 127 / 621000 = 2.05e-4
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