Gas Laws
using Avogadro's #
Molar Mass conversions
Multi-Step Problems
Vocabulary
100

The amount of space that a gas occupies.

What is volume.

100
what is avogadro's #?
What is 6.02 x 10^23
100
calculate the molar mass of NaCl
What is 58.44 g/mol
100
set up the following problem so that all of the unwanted units cancel out...do fill in numbers and do not solve!!! How many atoms are in 24g of Calcium?
What is 24g Ca x (____mol / ____ g) x (____ atoms / ______ mol)
100
the units for this term are g/mol
What is molar mass
200

pressure varies directly with temperature (constant volume)

What is Gay-Lussac's Law 

200
how many molecules are in one mole of NaCl
What is 6.02 x 10^23 molecules NaCl
200
What is the molar mass of (NH4)2SO4?
What is 132.14 g/mol
200
What number always goes with "moles" in the conversion factors we have used in this unit?
What is 1 mole
200
this number found on the periodic table is a weighted average of all isotopes of that element
What is average atomic mass
300

As pressure increase what happens to volume if temperature is held constant

What is decreases

300
How many moles are in 3.2 x 10^24 atoms of Cl?
What is 3.2E24 / 6.02E23 = 5.3 moles Cl
300
How many moles are in 3.25g of Sodium?
What is 3.25 g x (1 mol / 22.99g) = 0.141 mol Na
300
avogadro's number always goes with the units ___________ or ______________ as a conversion factor.
What is atoms, molecules
300
hydrogen is an example of a(n) ________
What is element
400

A sample of neon gas occupies a volume of 742 mL at 35˚C. What volume will the gas occupy at 60˚C if the pressure is held constant?

What is 802 mL

400
How many molecules are in 6.5 moles of water?
What is 6.5 x 6.02 E23 = 3.9 x 10^24 molecules H2O
400
How many grams are in 8.23 moles of CaCl2?
What is 8.23 mol x (110.98g / 1 mol) = 913 g CaCl2
400
How many molecules are in 52g of KPO4?
What is 52g x (1 mol / 134.068 g) x (6.02 E 23 atoms / 1 mol) = 2.3 x 10^23 molecules KPO4
400

= 6.02 x 10^23 atoms or molecules

What is avogadro's #

500

A relationship between volume, pressure, temperature, and number of moles of a gas

What is Ideal Gas Law

500
Is there more or less than one mole in 6.87 x 10^22 atoms of Hydrogen? calculator use not allowed!!!
What is less than 6.87 x 10^22 < 6.02 x 10^23
500
How many grams are in 2.8 moles of (NH4)2CO3?
What is 2.8 mol x (96.09g / 1 mol) = 269.052 = 2.7 x 10^2 g (NH4)2 CO3
500
How many grams are in 5.3 x 10^23 molecules of water?
What is 5.3 E23 molecules x (1 mol / 6.02 E 23 molecules) x (18.015 g / 1 mol) = 15.86 = 16 g H2O
500

How could you use the periodic table to determine how many moles are in hydrogen.

What is a a 1 mol ratio to the avg atomic mass of hydrogen so 1.008 g/1 mole 

M
e
n
u