Vapor Stainless
Chemistry – Gas Law Problems. Thanks in advance!!!?
These are a few problems I have. Please just tell me what law to use and what number is what. Thanks!
1. A stainless steel tank has a volume of 25 L. When the tank held 15.4 moles of helium, the pressure of the gas was 755 torr. The tank developed a small leak and lost 4.2 moles of gas. If the temperature remained unchanged, what was the pressure in the tank after the loss?
2. What is the volume of H2 gas requred to produce 7.53 liters of ammonia gas (NH3) at STP?
N2 + 3H2 –> 2NH3
3. The pessure of the air in an automobile tire was 32 lbs/in^2 when the tire was cool (20 degrees Celsius). After being driven for a while, the tire pressure was 38 lbs/in^2 . If the volume of the tire stays constant and no leaks develop, what is temperature of the air in the tire after driving?
4. 138 grams of Carbon Disulfide (CS2) vapors at STP were allowed to expand into an empty 50.0 L tank. After being moved to a location in the sun, the pressure was 1.14 atm. What is the temperature?
Lancenigo di Villorba (TV), Italy
TROUBLE 1)
Since you refer to Ideal Gas as Helium it is, I apply the “Ideal Gas law”
(p1 * V1) / (n1 * T1) = (p2 * V2) / (n2 * T2)
The experiment interests a “Throttle’s Flow” of a gas from its vessel. The Temperature and the Volume remain unchanged, hence I may state
p1 / n1 = p2 / n2
retrieving
p2 = n2 * p1 / n1 = (15.4 – 4.2 ) * 755 / 15.4 = 549 torr
TROUBLE 2)
The experiment interests “Ammonia Synthesis”
N2(g) + 3 H2(g) <---> 2 NH3(g)
starting from its chemical elements. When I refer to Standard Temperature/Pressure Conditions (e.g. 0°C and 1 atm), I understand that 7.53 STP-liter of Ammonia require
3 * 7.53 / 2 = 11.29 STP-liter
11.29 liter of Hydrogen.
TROUBLE 3)
Since you refer to Ideal Gas as Air may behave, I apply the “Ideal Gas law”
(p1 * V1) / (n1 * T1) = (p2 * V2) / (n2 * T2)
The experiment interests an “Isochoric Charles law” of a gas in its vessel. The Volume remain unchanged, hence I may state
p1 / T1 = p2 / T2
retrieving
T2 = T1 * p2 / p1 = 293.16 * 38 / 32 = 345 K = 75 °C
TROUBLE 4)
Since you refer to Ideal Gas as Carbon Sulphide may behave, I apply the “Ideal Gas law”
p1 * V1 = n1 * R * T1
in order to detemine the volume occupied by CS2′s 138 g in the Standard Temperature/Pressure Conditions (273.16K and 1 atm), that is
V1 = n1 * R * T1 / p1 = (138 / 76) * 0.0821 * 273.16 / 1 =
= 40.7 STP-liter
The experiment interests an “Polytropic Phenomenon” as Gas-Expansion in a greater vessel, hence I rearrange the “Ideal Gas law” in this manner
(p1 * V1) / T1 = (p2 * V2) / T2
retrieving
T2 = (T1 * p2 * V2) / (p1 * V1) =
= (273.16 * 1.14 * 50) / (1 * 40.7) = 382 K = 108 °C
I hope this helps you.
Benefits of Stainless Steel 360 Cookware and Vapor Cooking
|
|
World’s Finest Ply Steam Control 17-Piece Stainless-Steel Cookware Set $2,195.00 Each piece is constructed of extra heavy 304 surgical stainless steel and guaranteed to last a lifetime. The 7-ply construction spreads the heat quickly and evenly. The steam control valve makes “waterless” cooking easy and more healthy because it eliminates the need for grease or oil in cooking. To use the steam control valve, start cooking on medium heat (never use high heat). Then, when the val… |
|
|
Regalware Food Service Lodging Tri-Ply 7-piece Stainless Steel Cookware Set $114.75 Integrity, Dedication, Performance, Pride. This is the essence of Regal Ware Worldwide, the leading United States manufacturer and marketer of high-quality stainless steel cookware. Backed by more than 60 years of manufacturing excellence, our products are crafted by highly skilled professionals committed to creating world-class quality cookware. Regal Ware 7 pc. Stainless Steel Cookware Set. 18/… |
|
|
Vapo-Seal 7 Ply T304 17 pc Stainless Steel Cookware Set $369.00 The 17-piece cookware set includes the following pieces: 1-1/2 quart saucepan and cover |
|
|
Wagner 905 1,500-Watt On-Demand Power Steamer and Cleaner $150.00 cleaning and wallpaper removal is faster and easier than ever with the Wagner 905 On-Demand Power Steamer. This system provides 1,500 watts of deep sanitizing steam that you can control with the touch of a button. Because it uses just water to cleanse, sanitize, and remove wallpaper, the Wagner 905 will save you money and will help you keep your kids and pets safe from dangerous chemicals.The Wagn… |
|
|
JVCC AF20 Aluminum Foil Tape (2 mil Linered): 2 in. x 50 yds. (Silver) $9.01 JVCC AF20 Aluminum Foil Tape is an all weather aluminum foil tape for general purpose use. It is a dead soft high tensile 2 mil thick aluminum foil coated with an aggressive acrylic adhesive system on a removable paper liner. Its malleable foil conforms well to irregular and curved surfaces; and will perform well at both low and elevated temperatures. It can also be applied at low temperatures. JV… |
|
|
KOHLER K-690-CP Vinnata Kitchen Sink Faucet, Polished Chrome $346.00 Vinnata series of pull-down spray faucets offer a traditional design with stylish functionality. The Vinnata is perfect for both standard and secondary prep sinks…. |
|
|
V-Tower Digital Vaporizer Aromatherapy – Universal $115.60 The new V-Tower is back by popular demand. Manufactured by Arizer (the makers of the Extreme), the V-Tower is an excellent quality, whip based Vaporizer at an affordable price. It comes with precision temperature control, ceramic heater w/lifetime warranty, digital display, and auto shut off. Basically, it is an Extreme without the balloon/bag capabilities. If you’re the type of vaporizer who like… |
|
|
Aluminum Pipe VaporGenie $69.00 These pipes have a CNC machined and anodized aluminum pipe body. We think they are beautiful. They come with the same top we use on the Classic VG. We will ship these with a Black top, however you can have any classic top you want (colored, flame finished, clear finish or waxed). We think the Black looks best. If you want a different top, let us know ASAP through the Amazon purchase system. The… |
|
|
Professional Wall Mounted Salon Hair Steamer $98.88 This wall-mountable salon hair steamer is CE-certified and loaded with professional functions and features. It has 750 watts of heating power and a stainless steel coil for superb steam production. It includes a tank-style, heavy-duty water reservoir with a capacity of 30 ounces on top of the steamer. The water is drawn from the reservoir into the internal heating chamber. A drain valve under the … |
|
|
Blue Sea Terminal Feed Thru 3/8 Sm Blk Eliminate Chafing & Provide Strain Relief For Large Cable $30.69 TERMINAL FEED THRU 3/8 SM BLK…. |