2 Phosphorus trioxide (P302) and
phosphorus pontoxide (P20s) are
examples where phosphorus atoms
may bond in different ratios with
oxygen and thus have different
valencies. Give the valency of
phosphorus in P20, and P2Os. As
usual, take the valency of oxygen
as -2​

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases.as altitude increases, air density increases.air pressure and density are lowest at sea level.denser air exerts more pressure than less dense air.

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

What are the 4 phases of matter in order of increasing engery content?