7) The density of Cl2gas at STP, in grams per liter, is approximately: (а) 1.3 (b) 3.9 (c) 4.5 (d) 3.2 (е) 6.2

Q: 25. 600 mL of a gas at 345 kPa will occupy a volume of (A) 1200 mL (B) 300 mL (C) 690 mL (D) 255 mL…

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Q: For the reaction  Mg3N2(s) +3H2O(l)=3MgO(s)+2NH3(g) (A) if 10.3 grams of magnesium nitride is…

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Q: At critical temp. which of the following graph is correct PV (A) PV (BY P > P> PV PV (D) P >

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Q: If 7.50 L of water vapor at 50.2 °C and 12.26 kPa reacts with excess iron, how many grams of…

A: Given volume of water vapour = 7.50 L temperature = 50.2°C pressure = 12.2 kPa

Q: You can heat ammonium carbonate to generate gaseous products of water, carbon dioxide and ammonia.…

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Q: At a constant external pressure of 43.6 bar, a mole of X reacts via the reaction X(g) + 4Y(g)→2Z(g),…

A: Introduction: At constant pressure heat released or absorbed for a particular reaction is called the…

Q: 9. a. A bicycle tire holds 1.50 L of air at 506.6 kPa and 20.0 °C. How many moles of air is this?

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Q: Freon-12, CF2Cl2. which has been widely used in air conditioning systems, is considered a threat to…

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Q: Consider the following balanced equation: CH4 + 2 O2 --> CO2 + 2H2O If 33.7g of Methane, CH4 was…

A: Given: The mass of methane is 33.7 g. The pressure is 1.00 atm. The temperature is 200 °C…

Q: A hot air balloon has a volume of one million liters. What is the maximum load (in kg) that the…

A: Given information: Pressure = 1.0 atm Temperature = 36 °C Volume = one million liters

Q: At a chemistry laboratory, a helium-filled balloon with a volume of 2.00 L at 22 °C is dropped into…

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Q: A helium-filled weather balloon has a volume of 858 L at 15.9°C and 754 mmHg. It is released and…

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Q: Calculate the rms speed of an oxygen gas molecule, O2, at 21.0 °C. Express your answer numerically…

A: The given data : The temperature of the gas = 21°C The value of R  8.314 J/mol×K To determine =The…

Q: Magnesium can be used as a “getter” in evacuated enclosuresto react with the last traces of oxygen.…

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Q: Both dimethylhydrazine, (CH3)2NNH2, and methylhydrazine,CH3NHNH2, have been used as rocket fuels.…

A: Reaction between N2O4 with dimethylhydrazine is as follows, From stoichiometry of the above…

Q: Problem 1: A sample of nitrous oxide has a volume of 120 l at 1,500 mm hg and -10C.  Calculate its…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Part A MISSED THIS? Read Section 6.7 (Pages 235 - 238) ; Watch IWE 6.12. What volume of O2 gas,…

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Q: Calculate the density of oxygen, O2O2, under each of the following conditions: STP 1.00 atmatm and…

A: Density of the gas can be expressed in terms of pressure, molar mass and temperature. Write the…

Q: In the Alka-Seltzer reaction, if 21.01ml of carbon dioxide is collected at a carbon dioxide partial…

A: Given: The volume of carbon dioxide is 21.01 mL(0.02101 L). The partial pressure of carbon dioxide…

Q: Part A The air in a bicycle tire is bubbled through water and collected at 25 °C. If the total…

A: Given that: Volume of gas = 5.50L T = 25°C = 25°C + 273 = 298K Total pressure = 765 torr  Pressure…

Q: question. A helium-filled weather balloon has a volume of 861 L at 19.9°C and 751 mmHg. It is…

A: According to ideal gas equation,  (P1V1 ) /T1 = (P2V2)/T2

Q: A helium-filled weather balloon has a volume of 819 L at 14.9°C and 758 mmHg. It is released and…

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Q: 1) A gas at a pressure of 10.0 Pa exerts a force of A) 55 B) 0.55 C) 5.5 D) 1.8 E) 18 N on an area…

A: The pressure of the gas is = 10.0 Pa The area of the surface is = 2.2 m2 The force in N is =?

Q: Part A What is the volume, in liters, of 4.00 moles of methane gas, CH4, at 12 °C and 1.50 atm?…

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Q: sture of methane and helium gases, at a total pressure of 904 mm Hg, contains 2.03 grams of methane…

A: Mole (n) = mass in grams/molar mass  1) 2.03g CH4      nCH4 = 2.03 g/ 16 g/mol            = 0.127…

Q: This question was rejected, but this question is part of a practice set and as you can see it is out…

A: “Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Helium (He) is the lightest noble gas component of air,and xenon (Xe) is the heaviest. [For this…

A: (a)

Q: What mass of methane (CH4) can be stored at 75F in a 641mL container under normal atmospheric…

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Q: A sample of helium was placed in a cylinder under a piston at 25.0 C and 5.95 atm of pressure.  Then…

A: Given: Let Initial Volume be ‘V1’   Initial Pressure P1 = 5.95 atm. Initial Temperature T1 = 25.0…

Q: 5.6 liters of sulfur trioxide gas at STP weighed 20 grams. Calculate the density and the…

A: Given :-  Volume of SO2 at STP = 5.6 L  mass of SO2 = 20 g  To be calculated :-  Density of…

Q: What is the volume in liters of 13.30 moles of CO, at standard temperature and pressure (STP)?…

A: Given: Moles of CO2 = 13.30 moles At STP:  Temperature = 0 oC = 273.15 K                 Pressure =…

Q: MISSED THIS? Read Section 6.7 (Pages 235-238); Watch IWE 6.12. Oxygen gas reacts with powdered…

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Q: Calculate the average kinetic energy (unit J) of O2 molecule at 480K. Please enter your answer using…

A: Concept:  Each gas is having the translational , vibrational and rotational motion due to which it…

Q: zinc reacts with hydrochlroic acid to produce hydrogen gas if 50.0 mL of gas is collected over water…

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Q: Aluminum reacts with excess hydrochloric acid to formaqueous aluminum chloride and 35.8 mL of…

A: Consider the balanced equation as; 2Al s + 6 HCl l → 2 AlCl3 aq + 3 H2 g Given information is as…

Q: A helium-filled weather balloon has a volume of 813 L at 23.9°C and 759 mmHg. It is released and…

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Q: How many moles of butane (C4H10(9)) were combusted in the presence of excess oxygen gas if 47.5 L of…

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Q: hydrogen gas generated from the reaction of aluminum with hydrochloric acid was collected over water…

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Q: Question attached

A: The percent by mass provides information about the mass of the substance present in the total mass.…

Q: A mixture of argon and neon gases, at a total pressure of 712 mm Hg, contains 2.58 grams of argon…

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Q: 6. A meteorological balloon contains 250. L of He at 22°C and 740. mm Hg. If the volume of the…

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Q: A sample of helium was placed in a cylinder under a piston at 25.0 °C and 5.95 atm of pressure. Then…

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Q: Part A A very flexible helium-filled balloon is released from the ground into the air at 20. °C. The…

A: For Part A New Volume (V2) = 38.06 L   For Part B New Pressure (P2)=  794.42 mmHg

Q: 7. A sample of helium gas at 22.°C and 1.00 atm occupies a volume of 2.54 L. What volume will it…

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Q: A helium-filled weather balloon has a volume of 693 L at 17.9°CC and 759 mmHg. It is released and…

A: Given: Initial volume of balloon = 693 LInitial temperature of balloon = 17.9 °CInitial pressure of…

Q: In the Alka-Seltzer reaction, if 17.65ml of carbon dioxide is collected at a carbon dioxide partial…

A: Answer: number of moles of carbon dioxide (CO2) is 5.57 × 10-4 moles.

Q: Practice Problem 11.59 A balloon is filled with H2 gas to a volume of 1777.2 mL The pressure of the…

A: Applying ideal gas equation PV = nRT

Q: A sample of oxygen occupies 438.6 mL when the preassure is 561.8 mm Hg. At constant temperatur, what…

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.