For the same concentration of nickel, the height of the absorption peak at 352.4 nm was found to be about 30% greater for a solution that contained 50% ethanol than for an aqueous solution. Explain

Iknow #2 is d. i just need to know why

Mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?

Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.