20. The specific heat of ethanol is 2.44 J/gºC. Find the heat required to raise the temperature of 125 g of ethanol from 31 °C to 72°C.
A) 12500 J
B) 9450 J
C) 21960 J D) 31400

Fill in the blanks for the following statements: the rms speed of the molecules in a sample of h2 gas at 300 k will be times larger than the rms speed of o2 molecules at the same temperature, and the ratio µrms (h2) / µrms (o2) with increasing temperature. a not enough information is given to answer this question b sixteen, will not change c four, will not change d four, will increase e sixteen, will decrease