Gas Laws

Conversions

Problems

True or False

Random

Two factors affect the physical state of matter of a substance. What are they?

1- Attractive Forces between the molecules
2- Kinetic Energy of the molecules

A substance has a density of 0.30 g/L and occupies a volume of 5mL. How many kilograms is this equal to?

1.5 x10^-6 kg

7 days = _____________seconds

604,800 seconds

Molecules in an ice cube are more attracted to each other compared to molecules in water vapor. True or False

False

What does STP stand for?

Standard Temperature Pressure

Explain why balloons expand when placed in a vaccum

The less pressure, the more volume

Number of atoms in 0.25 mol of Ag

1.5 x10 ^23 atoms

Predict the products and balance the following reaction:
Al2(SO3)3 + NaOH -->

Al2(SO3)3 + 6 NaOH --> 3Na2SO3 + 2 Al(OH)3

The three gas laws can be combined and expressed by a mathematical expression called combined gas law. True or False?

True

Scientists agreed that at STP, the pressure would be _______atm and the temperature ______K

1atm and 273K

Which gas law states that: At a constant volume, pressure and temperature are directly proportional

Gay-Lussac's Law

Calculate the number of mols of Ni in 1.75g of pure Ni

0.02 mol

Predict the Products and Balance the following reaction: C2H6 + O2 -->

2 C2H6 + 7 O2 --> 4 CO2 + 6 H2O

Charle's Law states that: At a constant Volume: Pressure and Temperature are inversely proportional. True or False?

False. At a constant pressure: Volume and Temperature are directly proportional

In the ideal gas law, What is the value for the ideal gas constant?

0.0821 L*atm/mol *K

What is Boyle's Law?

At a constant temperature: Volume and Pressure are inversely proportional

What is the weight of 2.35x1023 molecules of Fe2S3 in grams?

81.15 grams of Fe2S3

If you start with 5.5 grams of lithium chloride, how many grams of calcium chloride will be produced?
2LiCl + Ca --> CaCl2 + 2Li

7.20 g CaCl2

The formula for the Ideal Gas Law is: PV=nRT. True or False?

True

1 mole of any gas at STP occupies a volume of _______ L

22.4 L

What is Avogadro's Law?

If the temperature, pressure and volumes of two gases are the same, the two gases contain the same number of molecules regardless of their identity

If you have a sample of 3.6 mol of N2O3 How many atoms of oxygen are there is the sample?

6.5x10^24 atoms of oxygen

How many grams of Al will be produced if you have 25.4g of Al2O3 and 10.2g of Fe?
Al2O3 + Fe --> Fe3O4 + Al

4.37g of Al

The following reaction is a Single Replacement reaction. True or False?
C3H8 + 5O2 --> 3CO2 + 4H2O

False

In PV=nRT, Wat are the units of R?

L* atm/mol *K