Objects and are placed in a warm bath at temperature t0=60∘c. object has initial temperature −20∘c and cooling constant 0.004 s−1. object has initial temperature 10∘c and cooling constant 0.002 s−1. after how many seconds will the objects have the same temperature?

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.