423 quiz work simple machines and power
question 3 of 15
2 points
if it takes 100 n to move a box 5 meters, what is the work done on the bor?
o
a 500
b. 203
o c. 5000
o d.51

What mass of iron must be in a hot pack to provide -335kj of heat when the iron reacts with oxygen and is converted to iron (111) oxide according to the following thermochemical equation? 2fe(s) + 1.5o2(g)—> fe2o3(s) delta h= -824.2kj/mol