Specific heat capacity of lead is 0.13J/g-K. how much heat (in J) is required to raise the temperature of the substance with a mass of 15.0 g from 60°C to 130°C

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.

How many moles are in 7.2 x 10^23 carbon molecules?

Which is the best metal to use in an alloy to increase its electrical conductivity?