Consider the balanced chemical reaction below. When the reaction was
carried out, the calculated theoretical
yield for iron(III) sulfide was 16.8
grams, but the measured yield was
11.6 grams. What is the percent yield?
2FeBr3 + 3Na2S → Fe2S3 +6NaBr

the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation:

false

because it does not have the potential to be entirely used up

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.