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E3

Posted: Mon Oct 08, 2018 12:45 pm
by 705088777
I don't understand how to set up an equation for this exercise. Do I find the molar ratio between the two atoms?

Re: E3

Posted: Mon Oct 08, 2018 2:41 pm
by sameeksha_panda_3h
That's pretty much it! The question is asking you to balance the weight of both sides of the scale. Assuming that the question is asking you to balance the 9 atoms of gallium (MM 70) with an x number of astatine (MM 210), you could set up the ratio equation 9/70=x/210 and cross multiply to get x=3.