What is the correct formula for the compound made of magnesium and nitrogen

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.

What is the maximum amount of al2(so4)3 which could be formed from 15.84 g of al and 12.89 g of cuso4?

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?