1. How many moles of air are there in a flask with a volume of 125 mL if the pressure is 745 mm Hg and the temperature is 22°C? 2. What is the density of carbon monoxide gas at 127ºC and 763 mm Hg?

Q: A sample of oxygen is collected over water and has a volume of 3.83 ml. The pressure of the…

A: Given: Sample of oxygen collected over water (Volume)=3.83 ml Pressure of collected wet gas=67.95…

Q: A gas is inside a 90 mL container at 773 mmHg and 22.5°C. What is the new pressure if the volume is…

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Q: 30.0 Liters of a mixture of N2 gas and CH4 gas was made up with a pressure of 700. mm Hg and a…

A: We know that for a mixture of gases present in the same container,we can apply the ideal gas…

Q: A given mass of a gas occupies 13200 cm3 at 28°C. What volume will it occupy if the temperature is…

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Q: The combustion of octane, Cg H₁8, proceeds according to the reaction shown. 2 Cg H₁8 (1) + 25 O₂(g)…

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Q: The volume of a sample of gas measured at 26 ºC and 0.986 atm is 10.50 liters.  What final…

A: from charles law: temperature and volume are directly realted using degrees kelvin. here both…

Q: A 0.780 mol sample of neon gas occupies a volume of L at STP.

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Q: 16.  What volume of water vapor gas would be produced from the combustion of 535.55 grams of…

A: Given, C3H8(g) + 5 O2(g) ---> 3 CO2(g) + 4 H2O(g) mass of propane (C3H8) react = 535.55 g mass of…

Q: A sample of NO2 gas has a volume of 37.3 mL at a pressure of 621 mm Hg and a temperature of 52oC.…

A: Volume of a sample of NO2 = 33.8 mL

Q: A gas‑filled weather balloon has a volume of 50.0 L at ground level, where the pressure is 771…

A: By help of Combined gas equation we can calculate the new volume of the weather balloon at higher…

Q: n an airplane flying from San Diego to Boston, the temperature and pressure inside the 5.544 m3…

A: Using ideal gas equation for gases we can find no. Of moles  of air molecules.

Q: In the laboratory, hydrogen gas is usually made by the following reaction: Zn(s) + 2 HCl(aq) → H2(g)…

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Q: sample of oxygen is collected over water and has a volume of 1.22 ml.  The pressure of the collected…

A: Introduction : We have to calculate final volume .

Q: If the standard molar volume is 22.4 L at STP, how many moles of N₂O5 gas are needed to form 49.1…

A: Given : at stp , molar volume = 22.4 L       And NO2 produced = 49.1 L

Q: What is the partial pressure of oxygen if the total pressure of wet gas is 705 mmHg, and the oxygen…

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Q: Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3 N2. Magnesium…

A: Given data: T= 20°C= 293K , P = 765 mm Hg =765/760 atm , mass of Magnesium nitride= 3.58 gm , R=…

Q: What Celsius temperature, T2,

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Q: A helium-filled balloon has a volume of 1 ?3 . As it rises in the earth's atmosphere, its volume…

A: Given P1 = 1 atm V1 = 1 m3 T1 = 20°C P2 = 0.1 atm V2 = ? T2 = -40°C

Q: What is the new pressure in mmHg of hydrogen gas if it was heated to 77 degree Celsius at constant…

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Q: What is the total pressure in a tank (in atm) if it contains 699 mm Hg of He, 11.2 psi of Ne, and…

A: Given: partial pressure of He = 699 mm Hg. Partial pressure of Ne = 11.2 psi. And partial pressure…

Q: Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3 N2 . Magnesium…

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Q: What volume of carbon dioxide gas would be produced from the combustion of 559.91 grams of propane…

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Q: A 0.530 mol sample of carbon dioxide gas occupies a volume of L at STP.

A: STP refers to standard temperature and pressure conditions. At STP, the standard temperature is 0oC…

Q: A 7-gallon [gal] container holds 45 grams [g] of nitrogen (formula: N2 , molecular weight=28 grams…

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Q: A 0.530 mol sample of neon gas occupies a volume of _______ L at STP.

A: • The values provided in the question are:-     i) Number of moles of Neon (Ne) gas sample = 0.530…

Q: What volume of Cl2 gas is occupied by 11.1 grams at 25.0 degrees Celsius and 740. mm Hg?

A: Given mass of chlorine gas = 11.1 g Molar mass of chlorine gas = 71 g/mol Number of moles of…

Q: What is the density of propane gas (CH3CH2CH3, 44.1 g/mol) at 25°C and 650 mmHg?

A: GivenTemperature = 25°C = 298KPressure = 650 mm of HgAssuming 1 mole of gas was there at STP, and…

Q: What is the partial pressure of oxygen if the total pressure of wet gas is 705 mmHg, and the oxygen…

A: When a gas collected over water then some water vapours are also present along with the collected…

Q: What volume of water vapor gas would be produced from the combustion of 574.80 grams of propane…

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Q: What Celsius temperature, T2, is required to change the volume of the gas sample in Part A (T1 = 12…

A: The objective of the question is to find the final temperature (T2) required to double the volume of…

Q: bacterial culture isolated from sewage produced 57.5 mL of methane, CH4, at 37°C and 752 mmHg. That…

A: For ideal gas equation of state is : PV = nRT  Or, n = PV/RT ....(1)  Given that : P = 752 mmHg =…

Q: Ethane burns in air to give H20 and CO2. 2 C2 H6 (g) + 7 O2 (g) 4 CO2 (g) + 6 H2O(g) a. What volume…

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Q: partial pressure

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Q: sealed flask contains 366 mL of gas at 42.7 oC and 836 mmHg. If the gas in the flask has a mass of…

A: Mole is equal to weight of substance divide by it's molar mass

Q: summer

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Q: In a steel container of 20.00 L, we have 55.5 g of N₂2(g) (M=28.02 g/mol), 77.7 g of O₂(g) (M=32.00…

A: The total pressure in the container is the sum of partial pressures of N2, O2, and unknown gas.…

Q: An 18 oz. can of hair spray contains 0.532 L of a gas mixture containing polymers and propellant at…

A: Volume (V1) = 0.532 L  Pressure (P) = 3.58 atm Temperature (T1) = 74.0°F = 296.48 K At constant…

Q: What pressure is exerted by 8.178 g of CO2 gas in a 4.387 L container at 48.3 °C? Note the following…

A: Consider the given information is as follows; Determination of molar mass of is as follows;

Q: What volume of gas does an aerosol can contain if it is at a pressure of 10.0 atm, a emperature of…

A: Given data set: Pressure= 10.0 atm Temperature= 25 °C = 298 K Mass of N2O gas = 462 gram.  Molar…

Q: A sample of H 2 gas occupies a volume of 2.25 L at a pressure of 628 mm Hg and a temperature of…

A: The given data contains, Volume V1 = 2.25 L Pressure P1 = 628 mm Hg. Temperature T1 =308.15 Pressure…

Q: One of the cylinders of an automobile engine has a volume of 400.0 cm3. The engine takes in air at a…

A: Given :-  Initial pressure = 1.00 atm  Initial volume = 400.0 cm3  Initial temperature = 15.0°C…

Q: CO2 gas with a volume of 25.0L was collected at 25 degrees Celsius and 0.982 atm. Calculate the…

A: CO2 gas with a volume of 25.0L(V1) was collected at 25 degrees Celsius (T1)and 0.982 atm (P1) We…

Q: A certain gas occupies 9.75 L at 32.0° C and 178 kPa. What is the volume of the gas in milliliter…

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Q: Consider the following balanced reaction: 2 Z(g) + 4 A(g) → 3 Y(g) + 2 B(g) Occurs at STP   a.…

A: The reaction given in the question is -…

Q: What volume of water vapor gas would be produced from the combustion of 544.42 grams of propane…

A: Given: Mass of C3H8 taken = 544.42 g. Mass of O2 taken = 2581.357 g. Pressure = 0.96 atm. And…

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.