Lead has a molar mass of 207.2g mol -1. Assuming that it is composed entirely of 206Pb, 207Pb and 208Pb, and that the percentage of the two lightest isotopes are equal. Calculate the relative percentage of these isotopes in the natural element

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Substance 33°f 100°f peanut oil solid liquid margarine solid liquid chocolate chips solid liquid 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.