Which statement defines calorimeter? a device that measures the heat that is gained or lost in a chemical change a device that measures the potential energy of an element a device that is used to measure heat capacity a device that is used to measure temperature

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

Iam hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?