How many atoms of hydrogen are in 420g sample of water

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.

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5