Determine the density of sulfur dioxide gas (SO2)?

The mass of 1 mole of anything can be determined from its molecular formula. In the case of SO2 it would be 64g/mol. The volume of any gas at STP is 22.4L/mol. To determine the density, you divide the mass by the volume (64g/mol / 22.4L/mol).

Explanation:

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

a:

by the combination of an unlimited number of elements