PLEASE HELP ME! THIS IS DUE IN 30 MINS!! I WILL MAKE YOU THE BRAINLIEST, REAL ANSWERS ONLY 3. Magnesium sulfate is added to sodium hydroxide to produce sodium sulfate and magnesium hydroxide (10 points)

a. Write the skeletal equation and Balance the chemical equation describing the reaction above.

b. What kind of reaction is this?

4. Iron(II) chloride is added to sodium carbonate to produce Iron(II) carbonate and sodium chloride. (12 points)

a. list the reactants for this reaction

b. list the products for this reaction

c. what kind of reaction is this?

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Explanation:

Magnesium sulfate is added to sodium hydroxide to produce sodium sulfate and magnesium hydroxide. The reaction is sodium sulfate and magnesium hydroxide.Iron(II) chloride is added to sodium carbonate to produce Iron(II) carbonate and sodium chloride.The reaction will be the same as the magnesium hydroxide

Explanation:

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.