Asked by Alex

Question: How do you calculate the molecular weight of something like: A_xB_yC where x=1, and y=0.5?

Attempt to the soln:
Let Molecular Weight be MW:
Is it then: MW OF A_xB_yC [x=1, y=0.5] = (MW of A)x1 + (MW of B)x0.5 + (MW of C)? Am I doing this correctly?
Answered by bobpursley
No. You have to have whole numbers as subscripts.
A<sub>2</sub>BC<sub>2</sub>
then MW = 2*A+B+2*C
Answered by Alex
Even when those individuals elements (A, B and C) were mixed with that composition??
Answered by bobpursley
it is the same composition1:.5:1 is the same as 2:1:2 MW reflects the sum of the atomic weights in a MOLE of the substance, not how much you made.
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