The chemical formula of a compound with a formula mass of 17 will be NH3
Formula mass
The formula mass of a compound or molecule is derived by summing the average molar weight of the individual atoms that make up the compound or molecule.
In this case, the formula mass is 17.
For ammonia with chemical formula NH3;
Molar weight of H = 1
Molar weight of N = 14
Formula mass = (14) + (1 x 3)
= 17 AMU
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