3. Find the density of air at 24°C and 2.026 x 10^5 Pa. One mole of air is assumed to be 79% nitrogen (Mnitrogen = 28.0 g) and 21% oxygen (Moxygen = 32.0 g)
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- (a) Find the density in SI units of air at a pressure of 1.00 atm and a temperature of 20 °C , assuming that air is 78% N2, 21% O2, and 1% Ar , (b) Find the density of the atmosphere on Venus, assuming that it’s 96% CO2 and 4% N2 , with a temperature of 737 K and a pressure of 92.0 atm.12. (c) Potassium metal reacts with water. 2K(s) + 2H,0(1) → 2KOH(aq) + H,(g) 0.2346g of potassium is reacted with excess water. Calculate the volume of gas formed. The gas volume is measured in cm° at room temperature and pressure. answer =6. At 100°C and 16.0 kPa, the mass density of phosphorus vapor is 0.6388 kg/m³. What is the molecular formula of phosphorus under these conditions?
- Find the density of the air at 0 degrees celsius and 1.013 x 105 Pa. One mole of air may be assumed to be 79% nitrogen (Mnitrogen = 28.0 g) and 21% oxygen (Moxygen = 32.0 g)3. A plastic tank containing a gas of 7.8 L and 5.35 atm at 7 °C weighs 96 g. If the empty tank weighs 52 g and the molecular weight of the gas is x g/mol, what is the value of x?1. The compressibility factor Z = PV/nRT for O2 at -27.1°C and 537.1 atm is 1.50; at 147.4°C and 95.5 atm, it is 1.02. A certain mass of oxygen occupied a volume of 3.28 L at 147.4°C and 95.5 atm. Calculate the volume occupied by the same quantity of oxygen at -27.1°C and 537.1 atm. 2. The composition of a mixture of gases in percentage by volume is 20.5% nitrogen, 15.7% carbon monoxide, 37.8% water, and the rest sulfur dioxide. Calculate the density of the gaseous mixture at 39.8°C and 1.46 atm in grams/liter. Report your answer to the hundredths position.
- You are working in an oil refinery . Where you use hydrocarbon gases like methane ( CH4 ) , ethane ( C2H5 , and propane ( C3Hg ) and prepared a mixture . When measured the pressure at 25 ° C it turns out to be 7.50 am This gas mixture was then also used in a mass spectrophotometer and the following data was obtained Based on this information find the partial pressure of each gas and report respectively as their name .appeared in the question5. What should be the temperature of oxygen for density to be 1.60 g/L at 730 mm Hg?What is the volume (in L) of (2.11x10^-1) g of argon gas if the pressure is (4.0800x10^2) mm Hg and the temperature is (3.520x10^2) K? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer:
- Earth's atmosphere is approximately 78.0% nitrogen and 21.0% oxygen. What is the mass in grams of oxygen in a cubic meter of air in a typical classroom at 1 atm and 25° C? ( 1 m3 = 1000 L) %3DA sample of unknown gas was heated to 125°C in a round bottom flask at standard pressure (1.00 atm), and its weight in a 100 ml round bottom flask was taken to be 30.098g. The round bottom flask weighs 30.0g. The gas was determined to be pure so that it can only be composed of a single element (N2, O2, F2, He, Ne, Ar, P2, S2, Cl2). Identify the gas.The processing plant you work for needs to produce 500 g of Li3N(s) from Li(s) and N2(g). Your supervisor told you that gas is supplied in excess and asked you to: (Li = 7, N = 14) The processing plant you work for needs to produce 500 g of Li3N(s) from Li(s) and N2(g). Your supervisor told you that gas is supplied in excess and asked you to: (Li = 7, N = 14) Question: determine the required amount (g) of lithium