Low-molecular-weight ketones are soluble in water. What is the shortest length of the carbon chain where insolubility becomes important?

How much heat is released upon converting one mole of steam (18.0 g) from 100.0 ∘c to water at 25.0 ∘c? show work and constants, trying to figure out how it works. only given the heat capacity for steam and water so try to only use that

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form

The element that has the greatest electronegativity is