Atotal of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 173 g of solution. the reaction caused the temperature of the solution to rise from 21.00 to 24.70 ∘c. what is the enthalpy of this reaction? assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water. enter your answer in kilojoules per mole of compound to three significant figures.

The enthalpy of the reaction is 1.34 KJ/mole (to three significant figures)

To determine the enthalpy of the reaction, enthalpy is given by the formula

That is

Where ΔH is the enthalpy change

Q is the heat energy

and n is the number of moles

Also, heat energy, Q is given by the formula

Where m is the mass

c is the specific heat capacity

and ΔT is change in temperature

∴

From the question,

m = 173 g

ΔT = 24.70 °C - 21.00 °C = 3.70 °C

n = 2.00 mol

[NOTE: c = 4.186 J/g°C (Specific heat capacity of water)]

Put all the parameters above into the equation,

We get

Hence, the enthalpy of the reaction is 1.34 KJ/mole (to three significant figures)

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mg3n2 is known as magnesium nitride

explanation:

i don't think ke is an compound

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.