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Heat of Phase Changes

Authored by Nicholaus Queen

Chemistry

9th - 12th Grade

NGSS covered

Used 14+ times

Heat of Phase Changes
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which equation should you use:

How much heat is required to melt 10.0 grams of H2O?

Q =mΔHvap

Q =mCΔT

Q =m(-ΔHfus)

Q =mΔHfus

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which equation should you use:

How much heat is released when 20.0 grams of H2O freeze?

Q =mΔHvap

Q =mCΔT

Q =m(-ΔHfus)

Q =mΔHfus

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which equation should you use:

How much heat is required to vaporize 15.0 grams of H2O?

Q =mΔHvap

Q =mCΔT

Q =m(-ΔHvap)

Q =mΔHfus

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which equation should you use:

How much heat is released when 35.0 g of H2O condenses?

Q =mΔHvap

Q =mCΔT

Q =m(-ΔHvap)

Q =mΔHfus

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which equation(s) should you use:

How much energy is required to heat 35.0 grams of H2O from 10°C to 80°C?

only Q =mΔHvap

only Q =mCΔT

Q =mCΔT and Q =mΔHvap

Q =mCΔT and Q =mΔHfus

Tags

NGSS.HS-PS3-4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which equation(s) should you use:

How much energy is required to heat 12.0 grams of H2O from -15°C to 80°C?

only Q =mCΔT

Q =mCΔT and Q =mΔHfus

Q =mCΔT and Q =mΔHvap

only Q =mΔHfus

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which equation(s) should you use:

How much energy is released when 18.0 grams of H2O is cooled from 115°C to 80°C?

only Q =mCΔT

Q =mCΔT and Q =mΔHfus

Q =mCΔT and Q =m(-ΔHvap)

only Q =m(-ΔHvap)

Tags

NGSS.HS-PS3-4

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