# Chemistry

posted by mysterychicken

I still don't understand how to do this problem; grams/molar mass I understand, but I need to see the steps CLEARLY.

43. How many moles are in 25.0 grams of potassium? Show your work and round your answer to the appropriate number of significant figures.

Thanks
-MC

1. bobpursley

a mole of any chemical is its atomic or molecular mass in grams.

a mole of K is 39.0983 grma

Moles of K in 25 g= 25/39.0983

2. sned

hey mysterychicken i think we go to the same school :) i have the exact same history questions on my tests.

send me an email, we could prolly help eachother out. seanned2009 at gmail

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