# Science

A cylinder containing 15L of helium gas at a pressure of 165 atm is to be used to fill party balloons. Each balloon must be filled to a volume of 2L at a pressure of 1.1 atm. What is the max number of balloons that can be inflated? Assume that the gas in the cylinder is at the same as the inflated balloon. (The empty cylinder will still contain helium at 1.1atm)

1. 0
2. 0
3. 41
1. I assume that the next to last sentence should read, "Assume that the gas in the cylinder AT THE END is at the same PRESSURE as the inflated balloons.
1. Calculate mols gas in the cylinder initally using PV = nRT. No T is listed so use any T (in kelvin) but always use the same T.

2. Calculate mols gas in the cylinder using PV = nRT. P will be 1.1 atm and T will be the same T used in step 1.

3. Subtract total mols - mols at the end to find mols gas available to fill balloons.

4. Calculate moles required to fill a single balloon from PV = nRT.

5. Now calculate the number of balloons that can be filled. Remember that if you get a fraction to round to the lower number.

Post your work if you get stuck.

1. 0
2. 0
posted by DrBob222

## Similar Questions

1. ### Chemistry

A cylinder containing 15.0 L of helium gas at a pressure of 165 atm is to be used to fill party balloons. Each balloon must be filled to a volume of 2.0 L at a pressure of 1.1 atm. What is the maximum number of balloons that can

asked by Aaqib Zaman on November 15, 2014
2. ### Chem

Hello! A 22.0 L cylinder containing helium gas at a pressure of 28.1 atm is used to fill a weather balloon in order to lift equipment into the stratosphere. What is the final pressure (in atm) in the cylinder after a 101 L balloon

asked by Anonymous on October 12, 2012
3. ### chemistry

calculate the pressure in atm of a balloon filled with 7.5g of helium gas if the baloons volume decreases to 7.5L suppose the balloons pressure and volume are originally 799 mmHg and 15L

asked by Quentin on May 5, 2010
4. ### chemistry

Relationship between the pressure and volume of helium gas at a constant temperature of 298K. Volume was changed by moving a piston & following data was obtained: Vol (L) Pressure (atm) 5 10.229 10 4.749 15 3.198 20 2.381 30 1.665

asked by Anonymous on August 29, 2010
5. ### Chemistry

A 334-mL cylinder for use in chemistry lectures contains 5.225 g of helium at 23 C. How many grams of helium must be releasedto reduce the pressure to 75 atm assuming ideal gas behavior?

asked by Dre on January 24, 2018
6. ### Chemistry

1. A cylinder of Xenon has a volume of 750. ml. At 25.0°C the cylinder has a pressure of 655 torr. How much Argon is present in the cylinder? a. 240. moles b. 0.0264 moles c. .315 moles d. 26.5 moles 2.If a 25 liter cylinder of

asked by E on March 4, 2011
7. ### Chem

Please tell me if these are right? A mixture of oxygen and helium is prepared for a scuba diver that will descend to 125 feet below the ocean surface. At that depth the diver breathes a gas mixture that has a total pressure of

asked by Lindsay on November 29, 2010
8. ### Physics

The boiling point of helium at 1 atm is 4.2 K. What is the volume occupied by helium gas due to evaporation of 70 g of liquid helium at 1 atm pressure and a temperature of 6.2 K?

asked by Gabe on February 24, 2012
9. ### physics

A rigid tank contains 38:0 kg of O2 gas at a pressure of 9:70 atm. If the oxygen is replaced by helium, how many kilogram of helium will be needed to produce a pressure of 8:00 atm?

asked by miya on May 20, 2013
10. ### chemistry(total pressure)

Two cylinders at 27C are connected by a closed stopcock ystem. One cyclinder contains 2.4 L of hydrogen gas at o.600 atm; the other cylinder contains 6.8L of helium at 1.40 atm. Assume valve take up no room. what is the total

asked by Suzie on October 16, 2009

More Similar Questions