PLEASE ANSWER QUICKLY The image below shows a jar containing four different liquids, each a different color. The liquids do not mix, so the colors remain separate. Which of these liquids has a density greater than that of the yellow liquid Check all that apply O A. Red O B. Clear DC. Blue O D. None of them ​

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.