Three grams of C-12 will posses how many atoms?

1 Answer
anor277
May 20, 2018

Approx. #1.5xx10^23# #""^12C*"atoms"#

Explanation:

We (i) calculate the molar quantity....

#"Moles of carbon"-=(3*g)/(12*g*mol^-1)=0.25*mol#

And then (ii) multiply this molar quantity by the Avocado number....

#0.25*molxx6.022xx10^23*mol^-1=??*"carbon atoms..."#

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