How many grams are in 34.5 moles of #KBr#?

1 Answer
anor277
Mar 25, 2018

Well, how many grams are there in one mole?

Explanation:

Now the molar mass of potassium bromide is #119.0*g*mol^-1#. How do I know this? Well, I have access to a Periodic Table that tells me the individual molar masses of atomic potassium, and atomic bromine. And by the way, you should have access to a Periodic Table as well. You will certainly be provided with a Periodic Table in every test of chemistry and fyzics you ever sit.

And so for the mass of #34.5*mol# quantity of this salt...we take the product...

#34.5*molxx119.0*g*mol^-1=??*g#...a tad over #4*kg#?

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