According to NFL regulations, the approximate pressure of a football should be 0.884 atm. The size 5 football has a volume of 0.144 L. On a game day, if the outside temperature is 25.0 C, calculate the number of moles of air that should be pumped to meet the required pressure.

Q: An experiment shows that a 268 mLmL gas sample has a mass of 0.428 gg at a pressure of 755 mmHgmmHg…

A: A gas sample has, Mass =  0.428 g Volume = 268 mL Pressure = 755 mmHg Temperature =  38°C,

Q: A piece of dry ice (solid carbon dioxide) with a mass of 5.50 g is placed in a 10.0 L vessel that…

A: Total pressure :- 1.233 atm

Q: A 15.0-L tank is filled with helium gas at a pressure of 1.00 x 102 atm. How many balloons (each…

A:

Q: A 4.57 L container containing a mixture of gases has a temperature of 41.7 °C and a pressure of…

A:

Q: Since helium is lighter than air, it is difficult to measure the mass of a sample, so to find out…

A:

Q: Initially given 3.6 L at 380 mmhg and 25 celsius is then transferred to a 5.0L flask at 0 celsius;…

A: Record the given data,

Q: Q2. A piece of dry ice (solid carbon dioxide) with a mass of 5.50 g is placed in a 10.0 L vessel…

A:

Q: If the volume of a balloon with an internal pressure of 100 kilopascals is 2.35 liters, what will be…

A: Given data contains, Initial volume is 2.35L. Initial pressure is 100kilopascals=0.9869 atm. Final…

Q: CH3OH can be synthesized by the following reaction. CO(g)+2H2(g)→CH3OH(g) What volume of H2 gas (in…

A: Given:Mass of CH3OH = 26.2 g.Temperature = 90 oC = 273 + 90 = 3363 KPressure = 752 mmHg = 0.9895…

Q: 3. A 0.543 mol sample of diborane gas, B,H6, a substance that bursts into flames when exposed to…

A:

Q: The air in a cylinder with a piston has a volume of 220 mL and a pressure of 650 mmHg. If the…

A: Given,Volume of air (V1) = 220mL.Initial Pressure of air (P1) = 650mmHg.Final Pressure of air (P2) =…

Q: At 304.8 K, a 9.58 L tank contains 1.90 moles of H2 gas under a certain pressure in atm. Calculate…

A: Given, Volume = 9.58 L Number of moles = 1.90 mol Temperature = 304.8 K

Q: The gas in a 250.0 mL piston experiences a change in pressure from 1.00 atm to 3.05 atı What is the…

A:

Q: a scuba diver exhales 1.85 L of air while swimming at a depth of 65.70 m where the sum of…

A:

Q: A sample of oxygen gas occupies a volume of 3.00 L at 0.00 oC and 2.00 atm pressure. What volume, in…

A: Given data,Initial volume of O2 (V1)=3.00LInitial pressure of O2 (P1)=2.00atmFinal pressure of O2…

Q: A 25.0 L tank of nitrogen gas is at 25 oC and 2.05 atm . If the temperature stays at 25 oC and the…

A: Boyle's law states that at constant temperature pressure of the gas is inversely proportional to the…

Q: A 8.60 L tank of nitrogen gas at a pressure of 455 mmHg is connected to an empty tank with a volume…

A: Boyle's law:  According to Boyle’s law, the absolute pressure exerted by a given mass of an ideal…

Q: If helium gas at 1.5 atm and 20°C is allowed to expand from 259 mL to 757 mL without changing the…

A: Given P1 = 1.5 atm  V1 = 259 ml P2 = ? V2 = 757 ml

Q: 3 H2 (g) + N2 (g) --> 2 NH3 (g)   A 3.22 L vessel containing the hydrogen at 21.1 oC and 6.750 atm…

A: To determine the theoretical yield, we have to know the moles of reactants present initially. To get…

Q: A sample of gas at 1063.4 mmHg and occupying a volume of 12.08 L is transferre to a smaller…

A: Boyl's law state that at a given temperature and composition volume of gas is directly proponstional…

Q: (a) A sample of nitrogen gas occupies a volume of 3.00 L at 760 mm Hg and 0.0 °C. If the volume of…

A: The ideal gas equation is given by, P1V1T1=P2V2T2 where P is the pressure, V is the volume and T is…

Q: The hydrogen gas formed in a chemical reaction is collected over water at 30.0 °C at a total…

A: 67.  At 30°C the vapor pressure of water is 31.8 mm Hg. Simply subtract the pressure water vapor…

Q: A large flask with a volume of 936 mL is evacuated and found to have a mass of 134.66 g. It is then…

A: step 1: Here, given as the: Thus, the mass of gas is 1.38g. Now, to calculate the molar mass,…

Q: A helium balloon at sea level has a volume of 2.10 L at 0.998 atm and 36.1oC. If it is released and…

A: We have given that  Initial volume of He gas= V1 = 2.10L Initial pressure of He gas=P1 = 0.998atm…

Q: A 4.05 g sample of an unknown gas at 33 °C and 1.05 atm is stored in a 3.05 L flask. What is the…

A:

Q: A 4.07 L volume of oxygen gas measured at 4.94 °C is expanded to a new volume of 4.50 L. Calculate…

A:

Q: CH3OH can be synthesized by the following reaction.CO(g)+2H2(g)→CH3OH(g) What volume of H2 gas (in…

A: According to the question, methanol is prepared by the given reaction.From this reaction, 2 moles of…

Q: A 2.4 L sample of a gas at fixed mass and constant temperature exerts a pressure of 1.2 atm. What…

A:

Q: The pressure in car tires is often measured in pounds per square inch (lb/in.2), with the…

A:

Q: Calculate the initial temperature for a gas container with a volume of 2.56 L at a pressure of 1.55…

A: The gaseous state is the state of matter with least intermolecular force of attraction between…

Q: At a certain temperature 65.2 mL of air, which is approximately 78% nitrogen, 21% oxygen and 1%…

A: Given : Initial volume of air = 65.2 mL Initial pressure of air = 105.3 KPa And final volume of air…

Q: A sample of hydrogen gas at a pressure of 903 torr and a temperature of 26.9°C, occupies a volume of…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant T =…

Q: mixture of unreacted gas which consists of 21 g of nitrogen gas and 6 g of hydrogen gas is placed in…

A:

Q: What is the volume of this sample?

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: A gas occupies 44.7 L at 2.00 ATM pressure at 27°C calculate its volume if the pressure is decreased…

A:

Q: A sample of gas at 810.8 mmHg and occupying a volume of 10.09 L is transferred to a smaller…

A: Given P1 = 810.8 mmHg V1 = 10.09 L P2 = ? V2 = 9.47 L

Q: The hydrogen gas formed in a chemical reaction is collected over water at 30.0 °C at a total…

A: Ideal gas equation, PV=nRT Where, P=pressure, V=Volume, n =number of moles R=gas constant…

Q: The hydrogen gas formed in a chemical reaction is collected over water at 30.0 ∘C at a total…

A: Total pressure = 732 mmHg, this pressure is the sum of the pressure of hydrogen gas as well as the…

Q: What volume (in liters) of air measured at 1.00 atm would have to be put into a bicycle tire with a…

A:

Q: How many moles of a gas at 100.0 °C does it take to fill a 1.00 L flask to a pressure of 1,50 atm?

A:

Q: 1) A 9.172 mol sample of argon gas is maintained in a 0.8485 L container at 304.5 K. What is the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: At a pressure of 740 Torr, a sample of gas occupies 5.00 L. Calculate the volume of the sample if…

A: according to  Boyles law:- the volume of a gas at constant temperature varies inversely with the…

Q: A weather balloon is filled with helium that occupies a volume of 5.00 X 104 L at 0.995 atm and…

A: A helium balloon before releasing, P1 = 0.995 atm V1 = 5×104 L T1  = 32 + 273.15 = 305.15 K…

Q: A 3.65 g sample of an unknown gas at 61 ∘C and 1.00 atm is stored in a 2.05 L flask. What is the…

A:

Q: What is the partial pressure of nitrogen in a container that contains 3.96 mol of oxygen, 7.49 mol…

A: Given, mol of Oxygen (nO2) = 3.96 mol mol of nitrogen (nN2) = 7.49 mol mol of carbon dioxide (nCO2)…

Q: A 1.98-g sample of an unknown gas has a volume of 816 mL and a pressure of 712 mmHg at 52.3 °C.…

A:

Q: Calcium carbonate decomposes due to the effect of temperature producing calcium oxide and carbon…

A: Given: Mass of calcium carbonate i.e CaCO3 decomposing = 3.1 g Volume of cylinder = 1.45 L And…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.