What is the molar mass of #(NH_4)_2SO_4#?

1 Answer
Meave60
Dec 8, 2015

The molar mass of ammonium sulfate is #"132.139 g/mol"#.

Explanation:

The molar mass of an element or compound is the mass of one mole of the substance. In order to determine the molar mass of a compound, multiply the molar mass of each element times its subscript. The molar mass of an element is its atomic weight on the periodic table in g/mol. If there are parentheses around some elements, the subscripts of the elements inside the parentheses are multiplied times the subscript after the parentheses.

Molar mass of #("NH"_4)_2"SO"_4"#:

#"N":##(2xx14.007"g/mol")="28.014 g/mol"#
#"H":##(8xx1.00794"g/mol")="8.06352 g/mol"#
#"S":##(1xx32.065"g/mol")="32.065 g/mol"#
#"O":##(4xx15.999"g/mol")="63.996 g/mol"#

Total: #"28.014 g/mol" + "8.06352 g/mol" + "32.065 g/mol" + "63.996 g/mol"="132.139 g/mol"#

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