You have to find the gram formula mass of C6H6 then do mass (g) = mol x GFM
Im working on science too!! I would help you but the attachment isn't pulling up..
Out of the five major mass extinction, one is Cretaceous-Tertiary extinction (K-T extinction). It happened 66 million years ago marked by the end of the Cretinous period.
The second brother Brother because he is much heavier and therefore has more energy to be released hope this helps