1. How many people work at Disney World?
53,500!

2. How many moles is 49g of Ca? 49g x 1mol =1.2mol 40gCa
Molar Calculation!
How many moles is 49g of Ca?
49g x 1mol
=1.2mol
40gCa

3. 10g Zinc reacts with hydrochloric acid to produce zinc (II) chloride and hydrogen gas. What volume of hydrogen gas will be produced?
1 Zn + 2HCl  1ZnCl2 + 1H2
mol
0.15
X=0.15
÷65
x22.4
g/L 10
=3.36L

4. Today Ideal Gas Law (PV=nRT) Temp/volume lab Practice worksheet
Fun w/gases

5. What is an “IDEAL” gas? It assumes:
Particles are SO small and SO far apart, that they basically occupy no volume
No intermolecular attraction
Constant random motion
Elastic collisions
Same as Kinetic Theory!!

6. What 3 things that affect gas pressure?
____________
Temperature
Volume
Amount of gas (moles)

7. Ideal Gas Law (Sum of All the Laws):
PV = nRT
n=#moles
R = atm
= 8.31 kPa
= 62.4 mmHg

8. Ideal Gas Law- PV = nRT P=7667 V=75 n=moles ? R= 8.31 T= 23+273
A tank has a volume of 75L. If stored at 23°C and a pressure of 7667kPa, how many moles of gas are in the tank?
P=7667
V=75
n=moles ?
R= 8.31 T=
(7667)(75)=n(8.31)(296)
n=234mol

9. Ideal Gas Law- PV= nRT
What volume would be occupied by moles of gas at a pressure of 1.50 atm and 25°C?
(1.5)V=(3.125)(0.0821)(298) P= V= n= R= T=

10. PV=nRT
A balloon is inflated with 0.25 g of hydrogen gas (H2) to a pressure of atm. If the desired volume of the balloon is 1.5L, what must be the temp?

11. For 1 mole of gas at 0°C and 1 atm, how many liters of volume does this represent?
PV=nRT

12. Ideal Gas Law
1.25g of nitrogen gas is at -24°C in a 45.5L container. What is the pressure?
How many grams of propane (C3H8) are sealed in a 0.8L container at 22°C and 780 mmHg?

13. 2 moles of O2 are initially at 1 atm, 5L, and 25°C
2 moles of O2 are initially at 1 atm, 5L, and 25°C. The gas changes its conditions to 1.5 atm, and 100°C. What is the new volume?

14. Fun with Gases! Coke can Implosion!
On your lab paper, explain what happened

15. How does this work?
sfs

16. How is soda made?