What amount of energy (in joules) is required to raise the temperature of a 15.0 g piece of copper from 72.0ºC to 99.0ºC ?

Stage in which a typical star has completely stopped fusion

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.