4. Calculate the R value based on density and the average molar mass of air: a. under STP under 20°C and 720 mmHg b.

Q: 7. Air is composed of approximately 78% N2, 21% O2 and 1% percent other gases. Calculate the density…

A: Given: The amount of nitrogenN2 present in the air is 78%, and that of oxygenO2 is 21%.  At standard…

Q: Use the molar volume of a gas at STP to calculate the density (in g/L) of oxygen gas at STP. Express…

A: Density is equal to the ratio of mass to volume. Density=MassVolume Ideal gas equation. PV=nRT P is…

Q: a 32.0 ml sample of hydrogen is collected over water at 20 degrees Celcius and 101.3 kpa pressure.…

A:

Q: What is the density of nitrogen gas (N2) at 25.0C and 780 mmHg? Please show work.

A: Conversion of mm Hg into atm: 760 mm Hg=1 atm780 mm Hg=1 atm760 mm Hg×780 mm Hg=780 atm 760

Q: Which of the following properties of a real gas is related to the b coefficient in the van der Waals…

A: Real gas is different from ideal gas in the properties like attraction or volume of molecules.

Q: cas occupies a volume of 365 mL at 24°C and 7 t STP? mL

A: Initial Volume = 365 mL Initial Temperature = 297 K Initial pressure = 742 mmHg Final Temperature =…

Q: 1.) Air is composed of approximately 78% N2, 21% O2 and 1% percent other gasses. Calculate the…

A: Answer: STP means standard temperature and pressure where standard temperature is 273.15K and…

Q: What volume of N2Os gas is formed in the following reaction from 4.0 mol of O2 and excess nitrogen…

A:

Q: Calculate the density of air at 1.00 atm and 302K. Assume that air has an average of molecular…

A: We can determine the density of air using ideal gas equation

Q: A 280.ml container of chlorine gas kept at 25C and 746 Torr is exposed to 1.25g white phosphorus…

A: Welcome to bartleby ! As per Q&A guidelines we can answer 3 subparts of a question .So,I have…

Q: A gas at 813mmHg and 38 degrees celsius occupies a volume of 6.70L. Calculate its volume at STP.

A: Given Pressure of Gas =813 mmHg Temperature = 38o C Volume= 6.70 L To calculate Volume of the Gas at…

Q: How many moles of air are there in a 2.0 L bottle at 19ºC and 747 mm Hg?

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

Q: Which of the following statements is (are) correct? I. The average kinetic energy of the gas…

A: The relation between the rate of effusion and the molar mass is given by Graham's law; r1r2=M2M1

Q: 2. A 600-m³ house contains air at 17°C and 1 atm. If the air pressure remains at 1 atm, how many…

A: Initial temperature of room (T1) = 17oC                                                    = 280 K…

Q: A 420.0ml volume of O2 gas is collected over water at 24*C and 750.0 Torr. The gas weighs 0.534g.…

A: The gas(O2) initially has volume of 420.0 mL, temperature of 24 oC(297 K), and pressure of 750.0…

Q: Calculate the density, in grams per liter, of a gas at STP if 4.44 L of the gas at 27.8 °C and 799.2…

A:

Q: Suppose a 3.00 L scuba tank is filled with about 29.7 moles of air at the ocean surface. If the tank…

A:

Q: Explain brielfy the four units that can be used to measure and express pressure: Standard Atmosphere…

A:

Q: A 420.0ml volume of O2 gas is collected over water at 24*C and 750.0 Torr. The gas weighs 0.534g.…

A: Given that : The volume of O2 gas = 420.0 mL Temperature = 24°C The pressure of O2 gas = 750.0 torr…

Q: What is the pressure in atmospheres of a soccer ball. The ball is 3.2 Liters and takes 15.50 Liters…

A:

Q: 195 mL gas was collected over water at 25 Cand 753 mm of Hg. What mass of H was collected?

A: An ideal gas refers to a gas which is composed of particles that move randomly  just like all other…

Q: Use the molar volume of a gas at STP to calculate the density (in g/L) of nitrogen gas at STP.…

A:

Q: A sample of fluorine gas occupies 810 ml at 205 K and 90.0 KPa. What volume would the gas occupy at…

A:

Q: 15. What is the volume of 1.28 moles of gas at 8.225 x 10² mmHg and 19.2 C? 16. 1.22 L of oxygen was…

A:

Q: 2. An unkown gas has a density of 4.025 g/L at 448 mmHg and 800 K. Determine the molar mass of the…

A: For the ideal gas, the temperature pressure and the volume are related by the ideal gas equation.…

Q: The H, gas produced was collected over water at 25.0 °C. The volume of the gas is 4.35L, and the…

A: Since, you have asked multiple questions, we will solve the first question for you.  In the…

Q: 1.066g sample of potassium metal is placed in water and the gas produced is collected over water in…

A: A. When potassium metal reacts with water, it forms potassium hydroxide and hydrogen gas .  The…

Q: How many mmHg are in 89.6 kPa?

A: 1 kPa = 7.50062 mmHg

Q: Mountaineers take a 10.0-mL sample of air on a mountaintop and measure its temperature and pressure…

A:

Q: At STP, the weight in grams of 22.4 liters of N2 gas is

A: At Standard Temperature and Pressure (STP), which is defined as a temperature of 0°C (273.15 K) and…

Q: A sample of gas has the density has the density of 1.18 g/ L. at 22oC and pressure of 1980 mmHg.…

A:

Q: Air is composed of approximately 78% N2, 21% 02 and 1% percent other gases. Calculate the density of…

A: Given: Air is composed of 78% N2, 21% O2 and 1% other gases. And STP conditions.

Q: Calculate the density, in grams per liter, of a gas at STP if 4.23 L of the gas at 42.6 ∘C and 725.2…

A:

Q: The thermal decomposition of calcium carbonate produces two by-products, calcium oxide (also known…

A: Solid Calcium carbonate undergoes thermal decomposition to give solid Calcium oxide and gaseous…

Q: Calculate the mass in grams of 3.55 L of NO gas at temp 52 C and 874 mmhg

A: By combining three laws Boyle’s law V ∝ 1/P   (constant T and n)       eqn i) Charle’s law V ∝ T…

Q: A weather balloon is filled with 15 300 L of hydrogen at a temperature of 19°C and a pressure 99.0…

A:

Q: CH4 + 2 O2 --> CO2 + 2H2O A student wants to make 99.4 L of CO2 that is to be collected at STP. How…

A: We have reaction of  methane with oxygen , we have STP condition and 99.4 L of CO2.  We have to…

Q: A mixture of 2.00 g of H2, 1.00 g of N2, and 0.820 g of Ar is stored in a closed container at STP.…

A:

Q: The four most common gases in the atmosphere are N2, O2, Ar, and CO2. The gas with the highest…

A: The average molecular speed of a gas is determined by its temperature and molar mass. According to…

Q: Automobile air bags are inflated with nitrogen gas, which is formed by the decomposition of solid…

A: The chemical reaction for the decomposition of sodium azide (NaN3) to nitrogen gas (N2) and sodium…

Q: Assuming ideal gas behavior, what is the density in g/L of unknown gas X, which has molar mass 18.0…

A: We have to calculate the density of gas.

Q: Ammonia is synthesized from nitrogen gas and hydrogen gas at 400 degrees Celsius and 350 kPa.  If…

A: Temperature (T) = 400°CPressure (P) = 350kPaVolume of N2 = 30.5 L-> Hydrogen is in excess.

Q: 5. What is the pressure of "wet" oxygen if 0.8 mol of dry oxygen at 101.3 kPa is collected? The…

A: The definition of oxygen measurement on a “wet” or “total” basis is based on the assumption that the…

Q: A 0.350 g gas sample is measured over water at 20.0-degree C and 750 mmHg. Its volume is 150 mL.…

A: According to the ideal gas law the volume of a gas is directly proportional to the number of moles…