General Chemistry | Heat Capacity (q=smΔT) [Example 1]

General Chemistry | Heat Capacity (q=smΔT) [Example 1]

Assessment

Interactive Video

Science, Physics, Chemistry

University

Hard

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The video tutorial explains the concept of heat capacity using the formula Q=SMΔT. It begins with a problem involving heating 50 grams of water from 25°C to 85°C, calculating the heat required. The tutorial details the variables involved, such as specific heat, mass, and temperature change, and demonstrates the calculation process. It also covers converting volume to mass using density, particularly for water. The video concludes with a preview of more complex problems involving algebra, to be covered in the next video.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial temperature of water in the problem discussed?

25°C

45°C

15°C

35°C

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which unit is typically used for specific heat in the heat capacity formula?

Calories per gram

Joules per gram per Kelvin

Joules per liter

Watts per meter

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the specific heat of water used in the calculation?

5.186 J/g°C

6.186 J/g°C

4.186 J/g°C

3.186 J/g°C

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the heat calculated in the problem converted from joules to kilojoules?

Multiply by 1000

Divide by 1000

Add 1000

Subtract 1000

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final temperature of water in the problem discussed?

85°C

105°C

75°C

95°C

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the density of water assumed in the problem when converting volume to mass?

0.5 g/mL

1.0 g/mL

1.5 g/mL

2.0 g/mL

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If given a volume of water, what additional information is needed to use the heat capacity formula?

Density

Viscosity

Temperature

Pressure