Fill in the coefficient numbers on the final balanced chemical equations below. If the equations can be simplified (by dividing all coefficients by the same number), please do so. a. HCl + NaOH à NaCl + H20

b. C2H6O + O2 à CO2 + H2O

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.