Find the coefficient of oxygen (O2) as an expression of x and y. Then write the balanced chemical for the combustion of CxHy in terms of x and y. (Hint: Begin by writing the equation when the coefficient to the hydrocarbon is one Then extend the solution for when it is 2.) When can you simplify your expression? When will your expression not produce whole number coefficients?

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.