Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:ZnS7H2O -- e-Tools Age

	Calculate molar mass
	Enter a chemical formula in the field below, pay attention to formula is case sensitive!!!	The formula should be entered as: H₂SO₄= H2SO4 CuSO₄.5H2O=CuSO4.5H2O 3BeO.Al2O₃.6SiO₂= (BeO)3.Al2O3.6SiO2

Calculations:
Formula: ZnS7H2O
Molar Mass: 307.8148 g/mol        1g=3.24870668986676E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Zn                1                  65.38                         21.24%
S                  7                  32.06                         72.91%
H                  2                  1.0079                        0.65%
O                  1                  15.999                        5.2%

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