6. A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 720. mL at 25.0°C and a barometric pressure of 755 torr. What would the volume of the oxygen be at STP? (Hint: First calculate the partial pres- sure of the oxygen, using Appendix Table A-8. Then use the combined gas law.)

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Q: Calculate the total pressure (in atm to 2 sf) in a container with 616 torr N2, 104 torr O2, and 40.…

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Q: Xenon fluoride can be prepared by heating a mixture of Xe and F2 gases to a high temperature in a…

A: That formula that give an idea of the relative atomic ratios of the compound is called empirical…

Q: When elemental sulfur, S8, is heated with AgF, a gas forms that contains only sulfur and fluorine.…

A: Density of gas = 0.807 glL Pressure = 152 mmHg =152176= 0.2 atm Temperature = 350C = (273+35) = 308K

Q: Calcium carbonate decomposes according to the equation CaCO3(s) ⟶ CaO(s) + CO2(g). What mass of…

A: Answer:- This question is answered by using the simple concept of calculation of mass of calcium…

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Q: Consider the arrangement of bulbs shown in the drawing. Each of the bulbs contains a volume of gas…

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Q: What volume of CO2 gas at 760.0. torr and 800. K could be produced by the decompositionof 2.5 mol of…

A: The problem is asking for the volume of CO2 gas produced from the decomposition of 2.5 mol of CaCO3…

Q: 11. If a container holds a mixture of nitrogen at 1100 torr and hydrogen at 0.45atm, what is the…

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Q: .A hydrocarbon gas weighing 0.232 g covers a volume of 102 mL at 23 OC and 749 mmHg pressure. What…

A: From ideal gas equation - PV = nRT PV = wRT/M where - P = pressure of the gas = 749 mmHg = 749/760…

Q: A mixture of cyclopropane gas (C3H6) and Oxygen (O2) in a 1.00 to 4.00 mole ratio is used as an…

A: Given that the mole ratio of cyclopropane and oxygen in the mixture is 1:4 respectively. The partial…

Q: 7.596×10-4 mol of CF4(g) (tetrafluoromethane gas) is generated into a 131.0 mL headspace, at 25.0…

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Q: In the reaction, 2 HgO(s) → 2 Hg(s) + O₂(g) what mass of mercury(II) oxide, HgO, would be required…

A: The volume of oxygen gas (O2) produced is 649 L.The given balanced chemical reaction is .To find the…

Q: A sample of O2 gas was collected over water at 23ºC and 443 torr. What is the partial pressure of…

A: Given: The pressure of O2 gas collected over water at 23 oC = 443 torr. The vapor pressure of water…

Q: 0.0380g of Mg strip reacted completely with 6 M HCl in the gas buret of 35.8 mL oh hydrogen gas is…

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Q: A 10.0 L vessel at 298 K contains O2(g) at a pressure of 740. mmHg. What mass of He(g) would be…

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Q: 4. Automobile air bags are inflated with nitrogen gas, which is formed by the decomposition of solid…

A: Given, Temperature = 25°C  Pressure = 756 torr Mass of NaN3 = 225 g  Volume of N2 = ?

Q: calculate the density of gas (X2) at STP in g/l (molar mass : X 14.01 g/mol)

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Q: When ozone (O3) is placed in contact with dry, powdered KOH at –15°C, the red-brown solid potassium…

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A: Given: Initial temperature (T1) = 29oC Final temperature (T2) = 73oC Final pressure(P2) = 5.2 atm

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.