Stoichiometric Calculations and Water Properties

Stoichiometric Calculations and Water Properties

Assessment

Interactive Video

Chemistry

10th - 12th Grade

Hard

Created by

Olivia Brooks

FREE Resource

The video tutorial covers a practice problem on the enthalpy of vaporization, focusing on calculating the heat required to vaporize 1.500 liters of water at 37 degrees Celsius. It explains the necessary data, including the density of water and the heat of vaporization. The tutorial guides through stoichiometric calculations to convert volume to mass and moles, and finally, it calculates the total energy required for vaporization using the given thermochemical data.

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9 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main focus of the practice problem discussed in the video?

Finding the boiling point of water

Determining the heat required to vaporize water

Calculating the density of water

Measuring the temperature of water

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the density of water at 37 degrees Celsius used in the calculation?

0.9934 grams per milliliter

0.950 grams per milliliter

1.000 grams per milliliter

1.034 grams per milliliter

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the volume of water converted for the calculation?

From milliliters to liters

From liters to milliliters

From grams to milliliters

From liters to grams

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass of water calculated from 1.500 liters at 37 degrees Celsius?

1480 grams

1500 grams

1510 grams

1490 grams

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molar mass of water used in the calculation?

20.02 grams per mole

18.02 grams per mole

16.00 grams per mole

22.02 grams per mole

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many moles of water are present in the given volume at 37 degrees Celsius?

80.00 moles

82.69 moles

85.00 moles

78.50 moles

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the heat of vaporization of water at 37 degrees Celsius?

45.00 kilojoules per mole

40.00 kilojoules per mole

42.00 kilojoules per mole

43.46 kilojoules per mole

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How much total energy is required to vaporize the given volume of water?

3500 kilojoules

3594 kilojoules

3550 kilojoules

3600 kilojoules

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary goal of the stoichiometric calculations in this problem?

To determine the number of moles

To find the temperature of water

To convert grams to liters

To calculate the density