We can be sure that a mole of table sugar and a mole of vitamin c are equal in their1) mass in daltons.2) mass in grams.3) number of molecules.4) number of atoms.5) volume.

Yes you are correct use the scientific method

Ch4 is nonpolar and insoluble in water. since all of the hydrogen atoms are evenly spread around the carbon atom even through the c h bond is polar all the poles cancel each other out.