The exertion of force upon a surface by an object, fluid, or gas.
100
S( s ) + F2( g ) → SF6( g )
Balance the above equation.
S( s ) + 3 F2( g ) → SF6( g )
100
Which of these is NOT a correct unit of pressure?
A) mm MG
B) Hz
C) Torr
D) psi
B) Hz
100
What is the Universal Gas Constant?
0.08206
200
State Avogadro's Law.
Volume of gas is directly proportional to the number of moles if temperature and pressure remain constant.
200
What is STP?
Standard Temperature and Pressure
200
Ammonia is commonly used as a fertilizer to provide a source of nitrogen for plants. A sample of NH3 (g) occupies 5.00 L at 25.0 degree Celsius and 15.0 atm. What volume will this sample occupy at STP?
68.7 L Ammonia
200
Atmospheric air pressure is not a constant as it changes depending on the :
A) Weather & Altitude
B) Weather
C) Altitude
D) IT IS A CONSTANT WHAT ARE YOU TALKING ABOUT?
A) Weather & Altitude
200
What does the unit of pressure mm MG stand for?
Millimeters Mercury
300
What is the Ideal Gas Law equation?
PV=nRT
300
Define an Ideal Gas
A hypothetical gas whose molecules occupy space and have no interactions, follows the gas laws exactly.
300
Calculate the volume of hydrogen produced at 1.50 atm and 19 degrees Celsius by the reaction of 26.5 g of zinc with excess hydrochloric acid according to the balanced equation.
Zn (s) + 2HCl (aq) → ZnCl2 (aq) + H2 (g)
6.47 L Hydrogen
300
What causes atmospheric pressure?
A) The gravitational pull of the mass of air away from the center of the Earth
B) The weight of the clouds
C) The mass of the air being pulled toward the center of the Earth by gravity
D) The pressure exerted on the Earth's surface
C) The mass of the air being pulled toward the center of the Earth by gravity
300
When the temperature of a gas decreases, does the volume increase or decrease?
It decreases
400
What is the basic formula for Boyle's Law?
PV=k
400
What is absolute zero?
-273 degrees C
400
Quicklime, CaO, is produced by heating calcium carbonate, CaCO3. Calculate the volume of CO2 produced at STP from the decomposition of 152 g of CaCO3 according to the reaction.
CaCO3 (s) → CaO (s) + CO2 (g)
34.0 L CO2
400
What is the molar volume of an Ideal Gas?
A) 22.6 L at STP
B) 22.4 L at STP
C) 22.1 L at STP
D) 22.3 L at STP
B) 22.4 L at STP
400
Name a few real world examples of the Combined Gas Law?
Scuba Diving,
Weather Balloons,
Cloud Formations,
Refrigerators,
Air Bags
500
State the formula to Charles' Law expressed in terms of the constant.
b=V/T
500
What is a manometer used for?
It's used for measuring the pressure of a gas in a container.
500
Solid iron reacts with sulfuric acid (H2SO4) to produce iron (II) sulfate and
hydrogen gas. If 650 mL of hydrogen gas are collected at STP, how many
grams of iron (II) sulfate are also produced?
44 g FeSO4
500
Which conversion is INCORRECT?
A)1.000 atm=760.0 mm Mg
B)1.000 atm=760.0 torr
C)1.000 atm=102,523 Pa
D)1.000 atm=14.69 psi
C)1.000 atm=102,523 Pa
the actual number is 101,325 Pa