Two hundred grams of a substance requires 9.76kj of heat to raise its temperature from 25 c to 45 c. it has a specific heat of 2.44j/g. use the table to identify the substance.
a ethanol
b gasoline
c ice
d air
i think it's gasoline!

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?