A cannonball is launched from the ground with 48279 joules of kinetic energy how much gravitational potential energy will the cannonball hold when it has reached its highest height

219 grams of iron (iii) oxide reacts with excess carbon according to the reaction equation shown below. fe2o3 + c → fe + co2 after a scientist performs the chemical reaction they find the actual yield of iron to be 57.4 grams. calculate the percent yield of this chemical reaction.

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

The excretory system,need answers for all: )