How do you evaluate #((5.0 g cm ^-3) (520 times 10^-10 cm)^3 (6.022 times 10^23 mol ^-1)) / (104 g mol^ -1)#?

1 Answer
Sep 17, 2017

Answer:

Well you could write it properly first. And I realize the formatting on this board is not wholly intuitive.....

Explanation:

We gots......

#(5.0*g*cm^-3xx(520xx10^-10*cm)^3xx6.022xx10^23*mol^-1)/(104*g*mol^-1)#

And then we cancel out the units to get a dimensionless answer....

#(5.0*cancel(g*cm^-3)xx520^3xx10^-30*cancel(cm^3)xx6.022xx10^23*cancel(mol^-1))/(104*cancel(g*mol^-1))#

#~=4#

Did I get it right? All care taken but no responsibility admitted.