What is the SI unit used to measure amount of substance?

1 Answer
Monzur R.
Jan 10, 2017

The amount of a substance, ie., the number of moles there is, is measured in #"mol"#.

Explanation:

#1# #"mol"# of a substance is the amount of that substance which contains the same number of particles as #12# #"g"# of carbon#-12#.

For solids, the number of moles can found using the following formula:

#"moles" = "mass"/"molar mass"#

For liquids, the number of moles can found using the following formula:

#"moles" = "conc." xx "vol."#

For gases, #1# #"mol"# occupies #24# #"dm"^3# at #278# #"K" # and #1# #"atm"# of pressure.

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