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Question about Endothermic and Exothermic Processes

Subject Chemistry

Chemistry

Source Originais Teachy

Originais Teachy

Topic Endothermic and Exothermic Processes

Endothermic and Exothermic Processes

Difficulty Easy

Easy

(Originais Teachy 2023) - Question Easy of Chemistry

During a school science fair, a group of students decided to perform a demonstration of endothermic and exothermic processes using simple chemical reactions. They utilized a certain amount of ammonium chloride (NH4Cl), which when dissolved in water absorbs 14.8 kilojoules of heat per mole (an endothermic process), and a certain amount of sodium hydroxide (NaOH), which when dissolved in water releases 44.5 kilojoules of heat per mole (an exothermic process). If the students used 53.5 grams of ammonium chloride and 40 grams of sodium hydroxide, calculate the total amount of heat absorbed or released during these reactions. Note: The molar mass of NH4Cl is 53.5 g/mol and that of NaOH is 40 g/mol.

The total amount of heat absorbed or released during these reactions is 14.8 kilojoules.

The total amount of heat absorbed or released during these reactions is 44.5 kilojoules.

The total amount of heat absorbed or released during these reactions is 29.7 kilojoules.

The total amount of heat absorbed or released during these reactions is 59.3 kilojoules.

The total amount of heat absorbed or released during these reactions is 0 kilojoules.

Answer sheet:

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