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Can someone just check this mole answer for me please?

In 20.65cm^3 there are 8.33x10^-4 moles of H3X (3 is subscript)
I need to work out how many moles are in 250cm^3

I did this by putting 8.333x10^-4 divided by 20.65. which gave me 10.08x10^-3.

Might seem really basic but just want to make sure I am doing it right :colondollar:
That's good!

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