How many kj or heat are needed to completely vaporize 23.4 g of h2o? the heat of vaporization for water at boiling point is 40.6 kj/mole. 31.2 52.8 23.4 2.26 none of the above?

__ _ _ _ _ is the process of removing earth materials from their original sites through weathering and transport and depositing the in another location. a. erosion b. sedimentation c. lithification d. dissolution

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

Why is nh3 classified as a polar molecule