A gas‑filled weather balloon has a volume of 56.0 L56.0 L at ground level, where the pressure is 761 mmHg761 mmHg and the temperature is 23.1 ∘C.23.1 ∘C. After being released, the balloon rises to an altitude where the temperature is −6.97 ∘C−6.97 ∘C and the pressure is 0.0772 atm.0.0772 atm. What is the weather balloon's volume at the higher altitude?

Q: Hydrogen is produced by a complete reaction of 6.24 g of sodium with an excess of gaseous hydrogen…

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Q: A sample of hydrogen gas was collected by displacement of water in a large gas buret. The total…

A: Given, Total pressure = 764.2torr. Temperature = 23.0oC. Volume of gas = 511mL. Vapor pressure of…

Q: An aqueous chemical reaction produces hydrogen gas with a total pressure of 547.0 torr at 17.5 oC in…

A: The total pressure of the gas is equal to sum of the partial pressure of the gases released. For…

Q: For many purposes we can treat ammonia NH3 as an ideal gas at temperatures above its boiling point…

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Q: A gas‑filled weather balloon has a volume of 59.0 L59.0 L at ground level, where the pressure is 759…

A: Use the below formula to find the volume at higher altitude. P1V1 / T1 = P2V2 / T2, Where, P and V…

Q: The following combustion reaction is done with 0.225 g of ethylene, C2H4. C2H4 (g)  + 3 O2 (g)  → 2…

A: Number of moles of ethene and carbondioxide can be calculated as follows:

Q: A sample of magnesium metal reacts completely with an excess of hydrocholoric acid: Mg(s) + 2…

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Q: A gas is heated from 262.6 Kelvin to 49.4 ∘∘C and the volume increased from 28.84 liters to 42.91…

A: Initial temperature, T1= 262.6 K Final temperature, T2 = 49.4∘C = 322.55K Initial Volume, V1 = 28.84…

Q: An unknown gas at 25.1 ∘C25.1 ∘C and 1.10 atm1.10 atm has a molar mass of 44.10 g/mol.44.10 g/mol.…

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Q: The following reaction is used to generate hydrogen gas in the laboratory. If 340.6 mL of gas is…

A: The volume of H2 = 340.6 mL = 0.3406 L Pressure of H2 gas collected = 748 mm Hg The pressure of H2…

Q: A sample of gas contains 0.1800 mol of NH3(g) and 0.2250 mol of 02(g) and occupies a volume of 17.6…

A: The change in temperature, pressure, volume and number of moles of an ideal gas is given by ideal…

Q: An aqueous chemical reaction produces hydrogen gas with a total pressure of 295.0 torr at 17.5 °C in…

A: Given: Total pressure = 295.0 torr Vapor pressure of H2O = 15.0 Partial pressure of H2 = ?

Q: A mixture containing 0.765 mol He (g), 0.330 mol Ne (g), and 0.110 mol Ar (g) is confined in a…

A: (a)Add all the moles of gases present in 10.00 L vessel and find the total moles.

Q: Atmospheric pressure on the peak of Mt Everest can be as low as 150 torr, which is why climbers need…

A: Boyles law :-  Pressure of fixed mass of a gas is inversely proportional to volume at constant…

Q: A sample of zinc metal is allowed to react completely with an excess of hydrochloric acid: Zn(s) + 2…

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Q: flask contains a mixture of N2 and H2 at a total pressure of 5.20 atm. If there are 1.00 mol of H2…

A: Given: Total pressure = 5.20 atm No.of mole of H2 = 1 mol No.of mole of N2 = 8 mol Calculate:…

Q: A sample of gas contains 0.1600 mol of HBr(g) and 8.000×10-2 mol of Cl2(g) and occupies a volume of…

A: The balanced equation is as follows: 2HBr(g) + Cl2(g)→2HCl(g) + Br2(g)

Q: Nitroglycerin (227.1 g/mol) releases a large amount of energy and gaseous products upon…

A: Given, molar mass of Nitroglycerin is = 227.1 g/mol. mass of Nitroglycerin is = 10 g. volume of…

Q: A mixture of 50.0 g of O2(g) and 50.0 g of CH4(g) is placed in a container under a pressure of 600…

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Q: Three glass bulbs, joined by closed stopcocks, have the following volumes and initial pressures of…

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Q: When heated, potassium chlorate decomposes to potassium chloride and oxygen gas according to the…

A: The objective of this question is to calculate the number of moles of potassium chlorate in the…

Q: A mass of 9.60 g carbon monoxide is reacted with 4.84 g hydrogen to form methanol. CO(g) +2 H₂(g) →→…

A: CO(g) + 2H2(g) → CH3OH (g)Mass of CO  = 9.60 g Mass of H2  = 4.84 gThe reaction was performed in a…

Q: 1. A gas mixture contains each of the following gases at the indicated partial pressures: N2, 226…

A: Given :-  PN2 = 226 torr  PO2 = 122 torr  PHe = 107 torr  Volume = 1.50 L  Temperature = 25°C  To…

Q: Two flasks are connected with a valve. In flask A, there is 4.4 L of He (g) at 0.42 atm. In flask B,…

A: Given,pressure of He gas in flask A = 0.42 atmvolume of flask A = 4.4 Lpressure of N2 gas in flask B…

Q: For many purposes we can treat ammonia NH3 as an ideal gas at temperatures above its boiling point…

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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: A 4.17 g4.17 g sample of NH3NH3 gas and a 4.17 g4.17 g sample of HClHCl gas are mixed in a 2.00…

A: GIVEN: NH3 gas sample =  4.17 g HCl gas sample = 4.17g Volume of flask =2.00 L Temperature=25oC To…

Q: The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes…

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Q: A sample of gas contains 0.1800 mol of CH(g) and 0.1800 mol of H,O(g) and occupies a volume of 12.3…

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

Q: A sealed container encloses a mixture of N2(g) and O2(g). The total pressure is 4.06 atm. The…

A: The first step is to convert the mass of N2 to moles. We can do this using the molar mass of N2,…

Q: a) A 15.0 L container contains 7.0 g Hz(g) (molar mass = 2.02 g/mol), 44.0 g N2(g) (molar mass =…

A: part A.We need to find the molar mass of the unknown gas and its partial pressure in the…

Q: A sample of gas contains 0.2000 mol of CH4(g) and 0.4000 mol of O2(g) and occupies a volume of 24.0…

A: The given reaction is as follows, CH4(g) + 2O2(g) ----> CO2(g) + 2H2O(g) The given information…

Q: Suppose a sample of refrigerant gas consisting of a simple mixture of the gases C2HF5 and CH2F2 has…

A: Given: Density of mixture = 1.92 g/L. Pressure of mixture = 0.625 atm. Temperature = 31 oC And the…

Q: c) This relationship is known as Graham's Law of Effusion. Since both gases are at te same…

A: Given, molar mass of heavier gas =mH molar mass of lighter gas = mL Velocity of heavier gas = VL…

Q: A helium-filled weather balloon has a volume of 591 L at 15.9°C and 752 mmHg. It is released and…

A: Given, A helium-filled weather balloon has a volume of 591 L at 15.9°C and 752 mmHg. It is released…

Q: Suppose that Daniel has a 2.002.00 L bottle that contains a mixture of O2O2, N2N2, and CO2CO2 under…

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Q: A fire extinguisher has a pressure of 10. atmatm at 25 ∘C. What is the final pressure, in…

A: Given :-  Initial pressure = 10. atm  Initial temperature = 25°C  Finl temperature = 89°C  To be…

Q: The label on a cylinder of a noble gas became illegible, so a student allowed some of the gas to…

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Q: A mixture of 2.55 moles of CO2 and 3.84 moles of N2 exerts a total pressure of 1.75 atm. What is the…

A: Given information,        A mixture of 2.55 moles of CO2 and 3.84 moles of N2 exerts a total…

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.