Lab: Enthalpy

Question 1

What were the learning goals of this lab experiment? Check all that apply.to use mass and temperature data to do computations involving heatto demonstrate that different reactions have different enthalpiesto compute a reaction’s enthalpy directly using mass measurements and a calorimeterto compute the enthalpy of a reaction that cannot be measured directly using a simple calorimeter

Revolt · Accepted Answer

to use mass and temperature data to do computations involving heat; to compute a reaction’s enthalpy directly using mass measurements and a calorimeter; to compute the enthalpy of a reaction that cannot be measured directly using a simple calorimeter

Question 2

’s law allows you to find the net enthalpy of the magnesium combustion by adding the enthalpies of intermediate reactions.

Revolt · Accepted Answer

Hess

Question 3

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

Revolt · Accepted Answer

mass; Selection 1: mass; Selection 2: temperature

Question 4

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

Revolt · Accepted Answer

temperature

Question 5

In both Reactions 1 and 2, the temperature change was , meaning that the reactions heat.

Revolt · Accepted Answer

positive; Selection 1: positive; Selection 2: gave off

Question 6

In both Reactions 1 and 2, the temperature change was , meaning that the reactions heat.

Revolt · Accepted Answer

gave off

Lab: Enthalpy Answers

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