A balloon containing 6.23L of air is filled at ground level at a pressure of 1.0atm. It is carried up a steep mountain. About halfway up the mountain, the balloon’s volume is measured again, and found to be 6.70L. What is the air pressure at this altitude?

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A: At normal condition, if one mole of air is considered, then the mole fraction of hydrogen gas…

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

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A: Since the total pressure above the water will be due to hydrogen gas and the water vapour presents…

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…

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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…

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Q: If the pressure on a 15.9L volume of gas is 347.6kPa and the gas is transferred to a container with…

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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…

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Q: A balloon with a 2.00 L volume contains 1.10 moles of gas. How many moles would have to be released…

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Q: A 1.72 L flask is filled with 1.03 g of some gas (molar mass 41.226g/mol) at 37.4°C. A different…

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Q: A lighter-than-air balloon contains 1005 mol helium at1.00 atm and 25.0°C.(a) Compute the difference…

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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.