How many moles of mgs2o3 are in 195 g of the compound?

Number of moles= mass divided by relative molecular mass

Ethene molecular fórmula= c2h4molecular weight = 29.046g/molhope it : )

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf