> 20 points < -- what chemical reaction does this equation represent? 2kcl + pb(no3)2 → 2 kno3 + pbcl2 (show evedancceee ) a. two molecules of potassium chloride react with one molecule of lead nitrate to form two molecules of potassium nitrate and one molecule of lead chloride. b. two molecules of potassium chloride react with two molecules of lead nitrate to form one molecule of potassium nitrate and two molecules of lead chloride. c. two molecules of potassium nitrate and one molecule of lead chloride react to form one molecule of lead nitrate and two molecules of potassium chloride. d. one molecule of potassium nitrate and one molecule of lead chloride react to form one molecule of lead nitrate and one molecule of potassium chloride.

Answer : The correct option is A.

Explanation :

The given chemical reaction is,

The given reaction is a balanced reaction in which the number of molecules of each of the elements on both the sides (reactant and product) are equal.

This reaction is a type of Double displacement reaction.

Double displacement reaction : It is a type of reaction in which two different compounds react to give two new compounds.

From the given reaction, we conclude that the two molecules of potassium chloride react with the one molecule of lead nitrate to form two molecule of potassium nitrate and one molecule of lead chloride.

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.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?