Boyles Law
Which lab activity demonstrated boyles law and how?
Which lab station demonstrated Charles law?
What is the flask with the balloon- as you decrease temperature you decrease the volume of water vapor, and the balloon gets sucked inside.
The syringe with blue water- cold water you have fresh water intrusion, warm the blue water is pushed out as the gas expands.
The candle in inverted flask- ari expanded when candle was lit, but reduced volume after it went out and the water level goes up.
Give an example of Gay Lussacs Law from our lab demonstrations.
What is the marshmallow in the bell, when pressure decreased the marshmallow got much larger.
What is a barometer and how is it used to predict weather?
What is barometers measure atmospheric pressure, and help predict temperature and precipitation in the atmosphere using the combined gas law.
What lab demonstrated the use of the ideal gas law in reactions?
What is generation of H2 gas via reaction between Magnesium and hydrochloric acid.
If you have an initial Pressure of 101.3 kPa, volume of 153 mL what would the volume of gas be if we decrease pressure to 98.7 kPa?
What is V2 = 157 ml.
In baking, yeast produces CO2 through anearobic respiration which causes the fluffiness in muffins, cakes, and esecially SF sourdough breads. Please explain.
What is as the CO2 gets warmer the volume expands causing the air pockets in baked goods.
What is the kinetic theory of gases?
What is gas is a large number of particles constantly in motion, distant from eachother, with an energy porportionally related to energy (temperature) of the system.
How many L of Ar are presen when conditions change from STP on a 30 L cylinder to 33 mmHg and 30C.
What is V2 = 31.91 L.
If you have 3.4 moles of H2 gas at 20 C, 2 atm what is the volume?
What is 40.89 L.
If you have a balloon that is released on accident from a beach birthday party with initial volume of 700ml, what is the final volume as it nears 0.5 atm and bursts? (this is how balloons end up as marine debris and kill sea turtles)
What is V2 = 1.4 L, 1400 ml.
If you have a CO2 cannister to help extinuguish fires near an active kitchen fire, and the temperature increases from 20C to 140 C rapidly, what is the final volume of the 280 L CO2 extinguisher?
What is (convert to K first) 395 L.
Define pressure.
What is the force exerted on the walls of a container by the particles within.
How many moles of Ar are found in 45 L at STP?
What is 2.01 moles of Ar.
This is the balanced equation for airbag inflation: 2 NaN3 + h e a t ⇒ 2 Na + 3N2
How many moles of NaN3 are required to inflate the airbag to 23 L (N2 gas) at 10 C, .95 atm?
What is 0.63 moles of NaN3.
In a SCUBA tank the volume of AIR is 2040 L when full at sea level. A diver goes to a deep reef at 40 m (and pressure increases 1 atm 10 m-1), what is the relative volume of air in the tank?
What is V2 = 408 L of air.
Your at sea level in 30C weather in your hot air balloon (air volume of 30050 L), and you need approximately 2000 more L of air to lift off. How much do you need to heat the air to reach the needed volume?
What is (in K) 323.16, so another 20K.
If you increase the pressure of a SCUBA cyclinder from 101.3 kPa to 450 kPa rapidly in a 10C room, what final temperature would the outside of the cylinder be?
What is 1257 K, or 984C. THats why we fill tanks very slowly so they don't explode.
What volume does 3.45 moles of Kr have at STP?
What is 77.28 L.
A sample of argon gas at STP occupies 56.2 liters. Determine the number of moles of argon and the mass of argon in the sample.
What is 2.5 moles of Ar and 100.23 g.
Pressure outside and airplane decreasesto 0.25 atm midflight. There is an error with the baggage door, and the original volume (226.5 m3 and 1L = 1 dm3) of gas rapidly changes within that airplane compartment. Does the volume increase or decrease at P2?
What is increase.
What change in volume results if 60.0 mL of gas is cooled from 33.0°C to 5.00°C?
What is 54.5 ml.
You are using a pressure cooker to make a stew for your family. If you normally would cook the stew at 240 C what pressure would you need to cook at when in tahoe (0.79 atm, 5 C)? Give your answer in kPa.
What is 146.85 kPa.
Pressure outside and airplane decreasesto 0.25 atm midflight, and temperature decreases to -1C. There is an error with the baggage door, and the original volume (226.5 m3 and 1L = 1 dm3) of gas rapidly changes within that airplane compartment. What is the final volume if original pressure was 1 atm and temperature was 22 C?
What is 8353.6 L.
At what temperature will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres?
What is 447.5 K.