Gulbrandson697 Gulbrandson697

01-09-2015
Chemistry

contestada

The percent composition of all elements in HClO3 is:
a. 2% H, 20% Cl, 78% O
b. 1% H, 42% Cl, 57% O
c. 2% H, 68% Cl, 30% O
d. None of the above

Respuesta :

lulu1991 lulu1991

01-09-2015

The percent composition is defined by mass percent. So the calculation is through the atomic mass. The mass for H is 1, Cl is 35.5, O is 16. So the answer is B.

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