When a solution of AgNO3 is mixed with a solution of NaBr:

1) NaNO3 precipitate will spontaneously form.

2) After a few minutes pass, the concentration of Ag+ and Br- will be lower than when the two solutions were first mixed.

3) After a few minutes pass, the concentration of Ag+ and Br- will be the same as when the two solutions were first mixed

4) The concentration of Ag+ and Br- are momentarily greater than in a saturated solution of AgBr.

5) AgBr precipitate will spontaneously form.

fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

hope this .

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.