How many moles is in 79.3 g #Cl_2#?

1 Answer
anor277
Aug 13, 2018

A bit over one mole....

Explanation:

To find the molar quantity of a given material we take the quotient....

#n_"number of moles"="mass of stuff"/"molar mass of stuff"#

#=(79.3*g)/(70.90*g*mol^-1)=1.12*mol*"chlorine molecules"#.

And we got a molar quantity of MOLECULES....

Note that we calculated a MOLAR quantity of molecules, NOT atoms. Chlorine, as are all the room temperature gases with any chemistry, is DIATOMIC...i.e. #Cl_2, O_2,F_2, N_2, H_2....#

How many moles of chlorine ATOMS does we got?

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