How many grams of co2 are in 12 mol of the compound?

CO2 has a molecular weight of 12+(16*2)=44grams/mol and there are 6.02x10^23 things (such as molecules)/mol. From there it is simple math, but you should do the math. 1.) Figure out the number of moles that you have. 2.) Multiply by Avagadro's number (6.02x10^23)

Divide 108.2 x 10^6 into 1.5 x 10 and the result will be in au (astronomical units)

It's because 3 if it was 10 it wouldn't look right do it goes up to 4d