MULTISTEP CONVERSIONS

Density->Mass - Use the formula d=m/v
Mass->Mole - Take the weight and multiply by 1mol/it's total molar mass
Mole->Mass - take the number of moles and multiply by STP (22.4L)
Mole->Molecules - Take the number of moles and multiply by avogadros number

Multistep Tutorial
http://www.schooltube.com/video/465930e6ab6bb972a1dc/Multiple-Step-Mole-Conversion-Tutorial



K.P