Elena makes the table below to determine the number of atoms of each element in the chemical formula 3 (NH4) 2SO4
Total atoms
Element
Nitrogen
Hydrogen
Sulfur
Calculation
1x2x3
4 x 2 x 3
1 x 4 x 3
4x3
24
12
Oxygen
12
What mistake did Elena make?
She should not have multiplied the sulfur atoms by the subscript 4.
She should not have multiplied the nitrogen atoms by the subscript 2.
She should not have multiplied the oxygen atoms by the coefficient 3.
She should not have multiplied the hydrogen atoms by the coefficient 3.
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