Miners’ Lamps Before the development of reliable batteries, miners’ lamps burned acetylene produced by the reaction of calcium carbide with water: CaC2(s) + H2O(l) à C2H2(g) + CaO(s) A lamp uses 1.00 L of acetylene per hour at 1.00 atm pressure and 18°C. How many moles of C2H2 are used per hour? How many grams of calcium carbide are needed for a 4 hour shift?

Q: Sodium azide, NaN3, decomposes according to the following equation and produces N2 gas that inflates…

A: Given, 2NaN3(s) ➝ 2Na(s) + 3N2(g) mass (in grams) of sodium azide (NaN3) needed = ? molar mass of…

Q: Lithium hydride reacts with water as follows: LiH(s) + H,0() - LIOH(aq) + H,(g) During World War II,…

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Q: Wetlands can play a significant role in removing fertilizer residues from rain runoff and…

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Q: Given the following reaction, if 1.9 L of nitrogen completely react with an excess of oxygen, how…

A: 1 mole of a gas occupy  22.4 L of volume under standard temperature and pressure.

Q: Acetelyn (C2H2) is formed by the reaction of water with calcium carbide, according to the following…

A: Given reaction is CaC2s+2H2Ol→CaOH2aq+C2H2g

Q: C6H12 + 9 O2 ----> 6 CO2 + 6 H2O (OR C6H12 + 9 O2 right arrow 6 CO2 + 6 H2O) How many liters of CO2…

A: This problem can be solved using the stoichiometry ratio of balanced chemical equation . First we…

Q: Given the following reaction, if 4.9 L of nitrogen completely react with an excess of oxygen, how…

A: The given reaction is, 2N2(g)+5O2(g)→2N2O5(g)

Q: The explosive, PETN, pentaerythritol tetranitrate, is one of the most powerful explosives known. It…

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Q: Calcium hydride, CaH2, reacts with water to form hydrogen gas. CaH2(s) + 2 H2O(l)  Ca(OH)2(aq) + 2…

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Q: Ammonia, NH3, may react with oxygen to form nitrogen gas and water. 4NH3(aq)+3O2(g)⟶2N2(g)+6H2O(l)…

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Q: Calcium hydride, CaH2, reacts with water to form hydrogen gas. CaH2(s) + 2 H2O(l)  Ca(OH)2(aq) + 2…

A: Calcium hydride, CaH2, reacts with water to form hydrogen gas. Chemical reaction: CaH2(s) + 2 H2O(l)…

Q: Ammonia is produced when nitrogen and hydrogen gases react at high pressures and temperatures: N2…

A: Given :  Volume of hydrogen gas = 6.0 x 107 litre  Pressure = 155 atm  Temperature = 497°C

Q: Magnesium can be used as a "getter" in evacuated enclosures to react with the last traces of oxygen.…

A: The given balanced chemical equation is :

Q: Hydrogen sulfide gas (H2S, 34.08 g/mol) can be produced from the reaction of aluminum sulfide (MW =…

A: The reaction given is  Hence from the above reaction we can see that 1 mole of Al2S3 will react to…

Q: 2 C8H18(l) + 25 O2(g) ----> 16 CO2(g) + 18 H2O(g) The above reaction is the reaction between…

A: Mass of C8H18 = 1 gallon  = 4000 g  Molar mass of C8H18 = 114 g/mol   No.of moles =  mass / molar…

Q: Given the equation: 2 NH3 (g) + 3 Cl2(g) → N2(g) + 6 HCl(g) How many milliliters of nitrogen can be…

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

Q: If a gaseous mixture is made by combining 2.17 g Ar and 2.55 g Kr in an evacuated 2.50 L container…

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Q: Sodium azide, NaN3, is a substance used in automobile to produce N2 gas that inflate the airbag…

A: By the help of stoichiometric coefficient we can find the amount of unknown substance by the help of…

Q: Wetlands can play a significant role in removing fertilizer residues from rain runoff and…

A: Given mass of No3 =315 g Molar mass of No3 =(!4+16X13) g/mol =62 g/mol No of moles of no3 =315g/62…

Q: Aluminum metal reacts with hydrochloric acid to produce hydrogen gas. 2 Al (s) + 6 HCl (aq) --> 2…

A: Given: Volume of H2 = 2.1 L Temperature = 25.0 oC Total pressure = 694.8 mmHg Partial pressure of…

Q: Use the following chemical equation   C6H12 + 9 O2 ----> 6 CO2 + 6 H2O (OR C6H12 + 9 O2 right arrow…

A: In given reaction 1 mole of hexene use 9 mole of oxygen

Q: Wetlands can play a significant role in removing fertilizer residues from rain runoff and…

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Q: The chlorofluorocarbon CCl2F2 can be recycled into a different compound by reaction with hydrogen to…

A: Given reaction,     CCl2F2(g) + 4H2(g) ⟶ CH2F2(g) + 2HCl(g)

Q: Four grams of a mixture of calcium carbonate and sand is treated with an excess of hydrochloric acid…

A: Since you posted multiple questions, we answered the first one We have the reaction CaCO3 + 2 HCl…

Q: Ammonium sulfate, an important fertilizer, can be prepared by the reaction of ammonia with sulfuric…

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Q: Sulfur is used in the production of vulcanized rubber, detergents, dyes, pharmaceuticals,…

A: 1. 1 mol of any gas = 22.4 L (at STP) 2. 1 m3 = 1000 L…

Q: Ethylene oxide is produced from the reaction of ethylene and oxygen at 270-290°C and 8-20 atm. In…

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Q: What volume would 15.2 g of a gaseous compound occupy at STP if its molecular weight is 44.0 g/mole…

A: Concept is based on ideal gas:

Q: 3 MgO + 2NH3(g) If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be…

A: MM of Mg3N2 = 10.3 g Mass of Mg3N2 = 100 g/mol Moles of Mg3N2 = mass/MM      = 10.3/100    = 0.103…

Q: CH3OH can be synthesized by the reaction:CO(g) + 2 H2(g) --------> CH3OH(g)What volume of H2 gas…

A: Introduction: The given chemical reaction is  COg +2H2g→CH3OHg Given data; P is The pressure of…

Q: Ammonia is produced when nitrogen and hydrogen gases react at high pressures and temperatures: N2…

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Q: Sulfur dioxide, which is used in the commercial production of sulfuric acid, is obtained from…

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Q: Pyruvic acid, HC3H3O3, is involved in cell metabolism. It can be assayed for (that is, the amount…

A: The given data is as follows: HC3H3O3(aq) → C2H4O(aq) + CO2(g) The volume of carbon dioxide = 21.2…

Q: Combustion of coal releases sulfur dioxide into the atmosphere. The following process converts this…

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Q: Methanol (CH3OH) is an important industrial compound that is produced from the reaction CO (g) + 2H2…

A: The volume occupied by one mole of any substance at STP is 22.4 L

Q: What was the initial temperature in Celsius?

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: The combustion of fuel in your car engine requires oxygen gas, which is supplied as air (21% oxygen…

A: Given data : Volume of air = 2.71 L          Pressure = 1 atm          Temperature = 25°C = 298 K…

Q: 2K(s)+2H2O(l)→2KOH(aq)+H2(g) If 0.497 grams of potassium reacts with an excess amount of water,…

A: Answer :- 160.27 mL of H2 will be produced. Solution :-  Balanced chemical reaction between…

Q: Silane, SiH4, reacts with 02 to give silicon dioxide and water: SH4 (g) + 2 O2(g)  SiO2 (S) + H2O…

A: Given: Pressure of SiH4 gas = 356 mmHg = 0.4684 atm Volume of SiH4 gas = 5.20 L Pressure of O2 gas =…

Q: Calcium hydride, CaH2, reacts with water to form hydrogen gas: CaH2(s) + 2 H2O (l) → Ca(OH)2(aq) +…

A: Given, Calcium hydride, CaH2, reacts with water to form hydrogen gas,according to the reaction as…

Q: Airbags used in automobiles are inflated with nitrogen gas (28.01 g/mol) produced from the reaction…

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Q: An unknown compound is 53.5% C, 11.2% H, and 35.5% O. A. Determine the empirical formula. B. If a…

A: Empirical and molecular formula determination of a compound :

Q: Ammonium sulfate, an important fertilizer, can be prepared by the reaction of ammonia with sulfuric…

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Q: CH3OH can be synthesized by the following reaction. CO(g)+2H2(g)→CH3OH(g) What volume of H2 gas (in…

A: Given, Methanol is 23.0 gT = 273 + 90 = 363 K.Pressure = 758 mmHgMolar mass of methanol is = 32 g/…

Q: Silane, SiH4, reacts with O2 to give silicon dioxide and water: SiH4(g) + 2 O2(g) → SiO2(s) + 2…

A: An Ideal gas- PV = nRT

Q: 14. When glucose is burned in a closed container, carbon dioxide gas and water are produced…

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Q: The reaction of magnesium nitride with water forms magnesium hydroxide and ammonia gas: Mg3N2(s) +…

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Q: Sulfur dioxide, a gas that plays a central role in the formation of acid rain is found in the…

A: Boyles law is defined as at constant temperature, pressure of gas is inversely proportional to…

Q: Calcium hydride, CaH2, reacts with water to form hydrogen gas: CaH2(s)+2H2O(l)→Ca(OH)2(aq)+2H2(g)…

A: The given chemical balanced equation as follows:

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.