Astudent finds a rock ont the way to school in the labratory he determines that the volume of the rock is 22.7 ml and the mass in 39.743 g what is the density of the rock

Density is mass over volume, so you can figure out the density by dividing 39.743 into 22.7. This gives you an answer of 1.75 (there's more, but I rounded off after because the next digit is a 0)

If the water vapor content stays the same and the temperature drops, then the relative humidity increases. its vise versa.if the water vapor content stats the same and the temperature rises, the relative humidity decreases. so, yes, i'd say that temperature and humidity have a strong relationship.

Ido not understand.