Thermochemistry Practice

Thermochemistry Practice

10th Grade

15 Qs

quiz-placeholder

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Thermochemistry Practice

Thermochemistry Practice

Assessment

Quiz

Science

10th Grade

Practice Problem

Hard

NGSS
HS-PS1-4, HS-PS3-1, HS-PS3-4

+1

Standards-aligned

Created by

Lisa Thompson

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Calculate the enthalpy of the following reaction:
Ca(OH)2 -> CaO + H2O
ΔHf in kJ/mol:  
      Ca(OH)2  -983.2
        CaO         -634.9
        H2O         -285.5

62.8 kJ

-62.8 kJ

-1840.6

1840.6

Tags

NGSS.HS-PS1-4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In an endothermic reaction, the sum of the heats of formation of the products are____than the sum of the heats of formation of the reactants. Hint: is ΔH + or -? This about how you calculate ΔH

less than

greater than

equal to

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When heat flows from system to the surroundings that is an example of an ________________ process.

exothermic

endothermic

Tags

NGSS.HS-PS3-4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What device is used to measure the amount of heat involved in a chemical reaction or physical process?

barometer

calorimeter

thermometer

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

2N2 + 3H2 --> 2NH3 + 46 kJ
How much energy would be produced if only 1 mol of nitrogen was reacted?

92 kJ

0.143 kJ

23 kJ

15 kJ

Tags

NGSS.HS-PS3-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How much energy must be used to produce 4.75 mol of gaseous water?
H2O (l) +  44.0 kJ --> H2O (g)

207 kJ

9.36 kJ

206.8 kJ

9.362 kJ

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

4 PCl5 + 3438 kJ --> P4 + 10 Cl2
How much energy is required to produce each mole of chlorine?

687.6 kJ

859.5 kJ

343.8 kJ

245.8 kJ

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

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