A helium-filled weather balloon has a volume of 636 L at 23.9°C and 751 mmHg. It is released and rises to an altitude of 4.93 km, where the pressure is 484 mmHg and the temperature is –9.1°C. The volume of the balloon at this altitude is  ________ L.   A sample of hydrogen gas occupies a volume of 7.92 L at 52.0°C and 336 torr. If the volume of the gas sample is decreased to 6.68 L, while its temperature is increased to 117.0°C, the resulting gas pressure will be _____  torr.

Q: 95.24 mL 24.0 °C Barometric pressure 739 mmHg Vapor pressure of water at 24.0 °C 22.5 mmHg Calculate…

A: Total Volume of H2 gas collected = 95.24 mL or ( 95.24 /1000 ) L Temperature, T = 24°C or 297 K…

Q: Nitrogen and oxygen react to form nitric oxide (NO). All substances are in the gas phase. If 0.502…

A: The objective of the question is to determine the partial pressure of nitric oxide.

Q: Consider the following equation: CH&O7(s) +3 NaHCO3(s) + H20(1) --> Na3CgHgO7(s) + 3H2O(1) + 3CO2g)…

A: Here we first calculate the production of CO2 as a mole. Then use gas equation to determine the…

Q: A 16.3 L sample of neon at 25.0°C and a pressure of 745 torr is kept at 25.0°C as it is allowed to…

A: Given :-  Initial pressure =745 torr Initial volume = 16.3 L Final volume = 21.2 L  Temperature =…

Q: A helium-filled weather balloon has a volume of 802 L at 16.9°C and 751 mmHg. It is released and…

A: For the phase change of the ideal gas the temperature, pressure, and volume of the initial state and…

Q: When a piece of Al metal is allowed to completely react with HCl (aq), 35.5 mL of hydrogen gas is…

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Q: A 0.4366 g sample of a compound of carbon, oxygen and hydrogen is burned completely and 453 mL of…

A: Given: mass of compound = 0.4366 g

Q: Liquid nitrogen trichloride is heated in a 1.75-L closed reaction vessel until it decomposes…

A: Pressure of N2: 192 torr Pressure of Cl2: 577 torrExplanation:

Q: The combustion of octane, C, H, proceeds according to the reaetion shown. 18 2 C,H18() + 25 O,(g) →…

A:

Q: Calcium carbonate, CaCO31s2, the principal compound in limestone, decomposes upon heating to CaO(s)…

A: Given, P = 1.3 atm V = 250 mL T = 310C

Q: A helium-filled weather balloon has a volume of 584 L at 16.9°C and 755 mmHg. It is released and…

A:

Q: Consider the reaction:  2 NiO(s)     ⟶     2 Ni(s)     +     O2(g) If O2 is collected over water…

A: We have to calculate the volume of gas collected for the reaction

Q: In a flask, there are two gases (gas 1 and gas 2). There is 2.34 L of gas 1, with 3.2 bars of…

A: Given a flask contains gas 1 and gas 2 2.34 L of gas 1.  Partial pressure of gas 1 = 3.2 bars 6.19 L…

Q: A gas is contained in a metal cylinder with a piston, so that the volume of the cylinder can change.…

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Q: Chlorine is widely used to treat swimming pool water. The volume of a sample Chlorine gas (Cl2) is…

A:

Q: A 2.02 g sample of aluminum reacts with excess of HCl(aq), and the liberated hydrogen gas is…

A: Given,  2Al(s) + 6 HCl(aq) -------> 2 AlCl3(aq) + 3 H2 (g)  The mass of Al = 2.02 g.   At…

Q: rogen produced from a hydrolysis reaction was collected over water. The data is compiled in the…

A:

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A: Temperature = 45.0 oCVVolume of gas = 116 mL

Q: A 0.3177  g sample of a compound of carbon, nitrogen and hydrogen is burned completely and  326 mL…

A:

Q: O2  collected over water at 40°C and total pressure of 745 mmHg, what volume of gas is collected for…

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Q: A helium-filled weather balloon has a volume of 762 L at 18.9°C and 752 mmHg. It is released and…

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Q: A student reads a barometer in the laboratory and finds the atmospheric pressure to be 793.6 mmHg.…

A: Given : Pressure= 793.6 mmHg To find: The conversion of pressure into atmospheres.

Q: Consider the reaction: 2 NiO(s) ---------->2 Ni(s) + O2(g) If O2 is collected over water at…

A: O2 is collected over water at 40.0°C and a total pressure of 745 mmHg To calculate the volume of gas…

Q: weather balloon is filled with helium to a volume of 355 LL at 16 ∘C∘C and 761 mmHgmmHg . The…

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Q: A mass of 7.24 g carbon monoxide is reacted with 5.21 g hydrogen to form methanol. CO(g) + 2 H₂(g) →…

A:

Q: One mole of hydrogen gas has a mass of 2.02 g. Use the molar volume value 22.6305 mol/L of hydrogen…

A: Given:Molar volume of hydrogen gas at STP = 22.6305 L/mol (i.e. volume of one mole of hydrogen…

Q: A helium-filled weather balloon has a volume of 518 L at 15.9°C and 751 mmHg. It is released and…

A: Combined gas law can be derived by using Boyle's law, Charles' law and Avogadro's law.

Q: volume of the balloon at this altitude is  L. A sample of nitrogen gas occupies a volume of 6.89 L…

A: 1) Using state equation, P1V1/T1 = P2V2/T2 754×731/296.9 = 641×V2/282.9 V2 =819L

Q: A reaction between liquid reactants takes place at 18.0 °C in a sealed, evacuated vessel with a…

A: Given: Mass of dinitrogen monoxide gas = 10 g Volume of vessel = 45 L Temperature = 18 °C = 18 +273…

Q: A sample of argon gas has a volume of 735 mL at a pressure of 1.20 atm and a temperature of 112 °C.…

A: Ideal gases are hypothetical gases which do have real existence. A gas can behave ideally at low…

Q: sample of neon gas at 290 K and 0.831 atm occupies a volume of 4.89 L. If the pressure of the gas is…

A: PV = nRT  Ideal gas equation   R is gas constant ,T is temperature ,V is volume  P is pressure ,n is…

Q: A balloon filled with 2.00 L of helium initially at 1.15 atm of pressure rises into the atmosphere.…

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Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

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Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A:

Q: A sample of an ideal gas at 1.00 atm and a volume of 1.59 L was placed in a weighted balloon and…

A: Given, P1= 1.00 atm V1 = 1.59 L P2 = 80.0 atm V2 = ?

Q: A 44.0 L metal cylinder stores a sample of gas at 6 °C under 1.02 atm. The temperature of the…

A: The effect of pressure and temperature is measured by Boyle’s law and Charles's law respectively.…

Q: Consider the following reaction: 2SO2(g) + O2(g)-> 2SO3(g) What is the theoretical yield of SO3 ? If…

A: Answer:The reactant that is exhausted first in the chemical reaction and decides the yield of…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: In Habers process for the synthesis of ammonia, 3 moles of H2 gas is consumed per mole N2 gas and…

Q: 1. A 5.85 g sample containing only MgO and CuO is placed in a 5.00 L container. The container is…

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Q: A sample of krypton gas at 292 K and 0.354 atm occupies a volume of 2.18 L. If the pressure of the…

A: Applying ideal gas equation  PV = nRT  where P = Pressure, V= volume, n= moles R = gas constant, T=…

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A:

Q: A reaction between liquid reactants takes place at 33.0 °C in a sealed, evacuated vessel with a…

A: Given, Temperature of vessel, T = 33.0 oC = 306 K Volume of Vessel, V = 20.0 L Mass of carbon…

Q: 5. You are given 1.56 g of a mixture of KClO3 and KCl. When the mixture is heated the oxygen gas…

A: In the given question we have to calculate the percentage of KClO3 in the mixture,  first of all, we…

Q: Chlorine is widely used to treat swimming pool water. The volume of a sample Chlorine gas (Cl2) is…

A:

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.