ChemTopper Free Chemistry Help

Chemistry Homework Help => AP Chemistry => Topic started by: KLynn712 on October 09, 2011, 11:06:40 PM

Title: unknown compound
Post by: KLynn712 on October 09, 2011, 11:06:40 PM
If 1.00 g of an unknown molecular compound contains 8.35x10^21 molecules, what is its molar mass?
Title: Re: unknown compound
Post by: uma on October 10, 2011, 12:13:17 AM
1 mole has 6.022X10^23 molecules
and 1 mole = molar mass of the compound
mass of 1 mole =6.022X10^23 molecules X 1g / 8.35x10^21 molecules