Which four quantities a, b, c and d are required to balance the equation ... aAl +bFe2O3 ==> CAl2O3 + dFe?

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

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.