How many grams of water are produced when 65.0 g of oxygen reacts with an excessive amount of propane (C3H8)

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.

Which statement is true about ionic compounds?

What’s the percent by mass of carbon in c10h14n2