Magnesium can be used as a “getter” in evacuated enclosuresto react with the last traces of oxygen. (The magnesium isusually heated by passing an electric current through a wireor ribbon of the metal.) If an enclosure of 0.452 L has a partialpressure of O2 of 3.5 * 10-6 torr at 27 °C, what mass of magnesiumwill react according to the following equation?2 Mg1s2 + O21g2¡2 MgO1s2

Q: A mixture of solid calcium oxide, CaO, and solid barium oxide, BaO, weighing 5.107 g is added to…

A: The objective of the question is to-a) Calculate the moles of carbon dioxide consumed by the…

Q: 6. What volume of hydrogen gas is formed at 28°C, and 800 mmHg, when 20.0g of calcium reacts with…

A: Thank you.

Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…

A: Decomposition reaction is a reaction in which a single reactant decomposes to form two or more…

Q: hree containers of equal volume are filled with three different gases. The first container is…

A: Correct Option :  ( a ) the number of moles of gas in the containers are the same.

Q: Which of the following statements are true? Which are false? Why is each true or false? (c) A…

A: A substance has three basic physical property- volume, pressure and temperature

Q: 4.00 L flask contains 1.40 atm argon at 25°C. a) Calculate the moles of argon gas initially present…

A: We will calculate all parts

Q: If 18.3 g N2O4 occupies 5.4 L at 250 K, what is the volume if all of the N2O4 is converted to NO2 at…

A: Given : Mass of N2O4 = 18.3 g And volume of N2O4 = 5.4 L The conversion reaction taking place can be…

Q: If 25.8 L of H2 is collected at 1.34 atm and 38°C, what was the mass of magnesium reacted? Mg(s) +…

A:

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

A:

Q: For the reaction C+O2 =CO2 what volume of O2 gas at 25.0 degrees Celsius and 1.02 atm is required to…

A: Consider the given balanced equation as; C + O2 → CO2     Given information is as follows;…

Q: What volume of hydrogen gas is produced when 35.3 g of iron reacts completely according to the…

A: Ideal gas equation: PV = nRT P = pressureV = volumen = moles R = gas constantT = temperatureBalanced…

Q: (a) A piston at 5.4 atm contains a gas that occupies a volume of 3.5 L. What pressure would have to…

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: 4) the industrial production of nitric acid via nitric oxide is called the ostwald process and is…

A: Given unbalanced reaction is :  NH3 (g) + O2 (g) ---------> NO (g) + H2O (g)  A). Balance the…

Q: Which volume will be occupied by a gas containing 6.02 x 10^23 atoms at STP

A: A question based on mole concept. Number of atoms at STP is prescribed and the follow-up question is…

Q: (a) A piston at 1.7 atm contains a gas that occupies a volume of 3.5 L. What pressure would have to…

A: Since we know that, PV = constant...(Boyle's Law)... V/T = constant...(Charles law)...

Q: A sample of butane (C4H10) gas having a volume of 2.0 L at 25 °C and 1300 mm Hg was mixed with a…

A: PFA

Q: Phosphorus trichloride is important in the manufacture of insecticides, fuel additives, and flame…

A: To find: (a) What different molecular masses (in amu) can be found for PCl3? (b) Which is the most…

Q: A flammable gas contains only C, H, N, and Cl. The complete combustion of a 100.0 mg sample of this…

A:

Q: The oxidation of trichloroethane results in the following reaction equation: 4 CaH,C|a() + 11 0, (g)…

A:

Q: Given the following chemical equation for the combination reaction of sodium metal and chlorine gas:…

A: Following information about the mass of sodium metal given -  Mass of sodium metal = 7.8 g  Also…

Q: (a) A piston at 6 atm contains a gas that occupies a volume of 3.5 L. What pressure would have to be…

A: We would use gas laws ( Boyle's law , Charles' law , Gay-Lussac's law )  to solve these questions.

Q: A high altitude balloon is filled with 1.41 x 104 L of helium gas at temperature of 21 oC and 1.00…

A: For part a): According to Ideal gas equation: PV=nRT 1 x1.41 x 104 =n x 0.0820 x (273+21)…

Q: Automobile air bags inflate during a crash or sudden stop by the rapid generation of nitrogen gas…

A:

Q: What is the density of CO2 at 655 mmHg and 55oC?

A: The objective of the question is to calculate the density of CO2 at a given pressure and…

Q: A magnesium with a mass of 0.06581 grams was reacted with excess HCl. The reaction produced 51.12 mL…

A: The balanced chemical reaction reaction is  Mg (s)     +    2 HCl (aq)     -------->     MgCl2…

Q: What is the pressure of the sample of gas trapped in the open-end mercury manometer shown between if…

A: A manometer is used to measure the pressure of a gas. The manometer is of two types, both of which…

Q: A sample of air contains 78.08% nitrogen, 20.94% oxygen,0.05% carbon dioxide, and 0.93% argon, by…

A: Given information The composition of gases in the air by volume is:  Nitrogen = 78.08 % Oxygen =…

Q: 25 g of hydrogen chloride have been treated with 50 g of manganese dioxide, obtaining manganese (II)…

A: Volume of chlorine obtained is: 4.31 LExplanation:

Q: A neon sign is made of glass tubing whose inside radius is 1.25 cm and whose length is 5.5 m. If the…

A: Since we know that PV = nRT where P = pressure V = volume of gasn = moles of gasR = 0.0821 T =…

Q: A neon atom has a radius of 68 pm. (a) Calculate the volume of 1 mol Ne atoms; V = 4πr3/3

A: All atoms are considered to be sphere. Therefore, the volume of the atom is given by , Volume =43πr3…

Q: ) If 300.0 grams of aluminum are mixed with 1800.00 ml of 6.0 M HCl, then how many ml of hydrogen…

A: It can solved using unitary method as follows

Q: A cylinder of volume 27.0 L is filled with 25.1 g of jobstium gas (MM = 72.21 g - mol-1)from the…

A: Given the volume of cylinder i.e. gas =27.0 Lnumber of moles of gas =0.348 moltemperature =326 Kwe…

Q: (b) A piston at 122.0°C contains a gas that occupies a volume of 2.5 L. To what temperature would…

A: A piston at 122.0°C contains a gas that occupies a volume of 2.5 L. The temperature at that would…

Q: 3. What mass of Fe is required to react with 455 mL of oxygen at 22 °C and a pressure of 725 torr…

A: The gaseous state is the state of matter with least intermolecular force of attraction between…

Q: If 4.81 g Ar are added to 4.01 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: First Calculate mole of Ar by mass÷molar mass Then Mole of He by PV=nRT. After this for total…

Q: What mass of neon gas would be required to fill a 2.00 L Flask to a pressure of 733 mm of Hg at 25…

A: Given data,  Volume of flask (V) = 2.00 L  Pressure (P) = 733 mm Hg =(733/760) atm = 0.964 atm…

Q: Automobile airbags contain sodium azide, NaN3. It decomposes to form sodium and nitrogen gas; the…

A: The decomposition reaction taking place can be written as  NaN3 (s) ---------> Na (s) + N2 (g)…

Q: Assuming constant pressure and temperature, how many liters of oxygen gas are required to burn 5.00…

A: At standard temperature and pressure, the balanced chemical equation for the combustion of butane…

Q: A sample of nitrogen gas collected at a pressure of 1.24 atm and a temperature of 27.0 °C is found…

A:

Q: Automobile air bags inflate during a crash or sudden stop by the rapid generation of nitrogen gas…

A:

Q: What mass of helium gas is needed to pressurize a 92.0 L tank to 209 atm at 18 °C? What mass of…

A:

Q: Air is 78.08% nitrogen; thus, when the atmospheric pressure is 1.00 atm the partial pressure of…

A: Given: Total pressure = 0.985 atm. Mole percent of nitrogen = 78.08 % Temperature = 25 oC And volume…

Q: A student recovered0.398g of THF vapor in a 125 mL flask. Assuming the vapor is an ideal gas with a…

A:

Q: (a) A piston at 2.6 atm contains a gas that occupies a volume of 3.5 L. What pressure would have to…

A: Pressure(P) = 2.6 atm, 8545 torrInitial Volume(V1) = 3.5 L, 2.5 L, 4.7 LFinal volume(V2) = 1.07 L,…

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.