SCIENCE 10. Gas laws including Combined Gas Law, Ideal Gas Law, and Avogadro's Law.

1. SCIENCE 10
QUARTER 4
MODULE 2
BEHAVIOR OF GASES II

3. PRAYER
Heavenly Father,
You hold each of us in Your loving hands.
Come fill our hearts, minds and bodies once again with hope.
Help us to cast our worries upon You, so that we can embrace our
learning today.
Bless us as we study and grow together.
Come and let those who teach and tutor us to be bringers of insight
and knowledge.
Lord, watch over us all, keep us safe within
Your Almighty hand.
We ask all this in the name of
our Saviour, Jesus Christ.
Amen.

4. SCIENCE 10
QUARTER 4
MODULE 2
BEHAVIOR OF GASES II

14. • The oxygen tank manufacturer used to
produce 5.0 liters of oxygen tanks at 2000
psi (pounds per square inch) and 25
degree Celsius. It is suggested that a 3.0
liters oxygen tank at 1500 psi is more
marketable. What temperature is needed to
produce a 3.0 liters of oxygen tank at 1500
psi?

16. •Helium gas has a volume
of 250 mL at 0°C at 1
atm. What will be the final
pressure if the volume is
reduced to 100 mL at
45°C?

17. TAKE HOME EXERCISES (MODULAR CLASSES)
Answer the following problems involving
Combined Gas Law:
1. The volume of a gas at 27°C and 700 mmHg
is 600 mL. What is the volume of the gas at -
20°C at 500 mmHg?
2. A 2.5 L of nitrogen gas exerts a pressure of
760 mmHg at 473 K. What temperature is
needed to reduce the volume to 1.75 L at 1140
torr?

22. SAMPLE PROBLEM
•A 5.50 L sample at 26.0 °C and 2.00
atm pressure contains 0.500 mol of
gas. What will be the new volume of
the gas if a 0.200 mol of gas will be
added to its container at the same
pressure and temperature?

23. TAKE HOME EXERCISES (MODULAR CLASSES)
Answer the following problems involving Avogadro's
Law:
1. What will be the final volume o a 5 L He gas which
contains 0.965 mol at 30°C and 1 atm, if the amount of
this gas is increased to 1.80 mol provided that
temperature and pressure remains unchanged?
2. A 7.25 L sample of Ni gas is determined to contain
0.75 mol of nitrogen. How many moles of nitrogen gas
would be there in a 20 L sample provided that
temperature and pressure remains the same.

25. SAMPLE PROBLEM
•A 4.05 mol sample of He
has a pressure of 1.50 atm
at a temperature of 36°C.
What is its volume?

30. TAKE HOME EXERCISES (MODULAR CLASSES)
Answer the following problems involving Ideal Gas
Law:
1. Calculate the pressure exerted by a 0.25 mole sulfur
hexafluoride in a steel vessel having a capacity of
1250 mL at 70 °C.
2. Fermentation of glucose produce gas in the form of
carbon dioxide, how many moles of carbon dioxide is
produced if 0.78 L of carbon dioxide at 20.1°C and 1
atm was collected during the process?

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‘TIL NEXT TIME!
PREPARED BY:
MELANIE P. JAVIER