Which one is a true statement about exothermic reactions?

a.
energy from an outside source is continuously being added.

b.
the reaction container always feels cold.

c.
the reactants have more heat energy than the products.

d.
more heat is given off than is put into the reaction.

D

Explanation:

I just took the test and got the answer right

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.

i don't understand. explain it clearly