What is the molality of Nacl in an aqueous solution in which the mole fraction of Nacl is 0.100?

What’s the scientific notation for the number 6,840,000,000

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

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.