A 1.90 g sample of elemental lithium,Li(s) is reacted with water, yielding lithium hydroxide, LIOH, and hydrogen. 2Li(s) + 2H20(1)→ 2LIOH(aq) + H2(g); The H2(g) is collected over water at 18 °C. What are the partial pressures of the two gases (hydrogen and water vapor) when contained in a 1.00/ container at 22 °C? What is the total pressure?

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: Answer: Volume of CO2 will be calculated using ideal gas equation which is shown below: PV=nRTV=nRTP…

Q: The vapor pressure of mercury at 20 oC is 1.7 x 10-6 atm. Your lab partner breaks a mercury…

A: Given temperature, T = 20 oC + 273.15 = 293.15 K  Pressure, P = 1.7*10-6 atm  1 atm = 101325 Pa or…

Q: When zinc metal is added to hydrochloric acid, the following reaction takes place Zn(s) + 2 HCl(aq)…

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Q: A 5.50-mole sample of NH3 gas is kept in a 1.85-L container at 309 K. If the van der Waals equation…

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Q: At 1°C a 1.0-L flask contains 5.0 x 10 ^-2 mole of N2, 4.0 x 10^2 mg O2 , and 3.1 x 20^21 molecules…

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Q: Each sketch below shows a flask with some gas and a pool of mercury in it. The gas is at a pressure…

A: It is given that initial pressure of the gas is 0.5 atm in both the tubes, given one tube is an open…

Q: A gas mixture contains O2, N2, and Ar at partial pressures of 125, 175, and 225 mm Hg, respectively.…

A: Given details, At partial pressures, P(O2)=125 mm HgP(N2)=175 mm HgP(Ar)=225 mm Hg Then, the total…

Q: Tochloric acid, the following tion takes place s) + 2 HCI(aq) → ZNCI2(aq) 1) culate the volume of H2…

A: Given, Temperature  =30 °c = 303 K Mass of Zn = 65.7 g Moles of Zn = mass/Molar mass      =…

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

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Q: 2Na(s) + 2H2O(1)→2NaOH(aq) +H2(g) The product gas, H2, is collected over water at a temperature of…

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Q: Calcium carbide reacts with water to produce acetylene gas according to the following equation: CaC₂…

A: Reaction :

Q: A quantity of N2(g) gas occupies a volume of 1.0 L at 300 K and 1.0 atm. The gas expands to a volume…

A: Initial conditions given are as follows: Volume of N2 gas = 1.0 L  Pressure of  N2 gas = 1.0 atm…

Q: A commercial mercury vapor analyzer can detect, in air, concentrations of gaseous Hg atoms (which…

A: \

Q: Lithium metal of mass 20.0 g is dropped into a beaker of water, producing hydrogen gas and an…

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Q: The volume of a sample of pure HCl gas was 289 mL at 24 ° C and 137 mmHg. It was completely…

A: The number of moles of HCl is calculated as,

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: Given,          Vapor pressure of water = 23.8 mmHg          Total vapor pressure = 911 mmHg…

Q: gas mixture contains O2, N2, and Ar at partial pressures of 125, 175, and 225 mm Hg, respectively.If…

A: In this question, we want to determine the Partial pressure of CO2 gas When total pressure and…

Q: What volume of hydrogen gas (in mL) at 799 mm Hg and 26 °C can be produced when 2.8 g of MgCO3(s)…

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Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: The ideal gas equation is shown below: PV = nRT Where; P = pressure of the gas V= volume of the gas…

Q: Aluminum reacts with aqueous sodium hydroxide to produce hydrogen gas according to the following…

A: Answer:- This question is answered by using the simple concept of stoichiometry which involves the…

Q: A piece of sodium metal reacts completely with water as follows: 2Na(s) + 2H,O(1) → 2N2OH(aq) +…

A:

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: The reaction is given as, CaCO3 + 2 HCl →CaCl2 + H2O + CO2

Q: What volume of hydrogen gas (in mL) at 707 mm Hg and 42 °C can be produced when 2.1 g of CaCO3(s)…

A: Given- Pressure=707mmHg = 707/760 = 0.9303 atm  (1 atm = 750 mmHg) Temperature=42°C = 42 + 273 = 315…

Q: Consider the reaction: Li2O(aq) + CO2(g) Lİ2CO3(s) ----> What volume of cabon dioxide will react…

A: Given :-  Li2O(aq) + CO2(g)  ---> Li2CO3(s)   Mass of Li2O = 1.00 g  Molar mass of Li2O = 29.88…

Q: What volume of hydrogen gas (in mL) at 703 mm Hg and 40 °C can be produced when 2.9 g of MgCO3(s)…

A: According to an ideal gas equation PV= nRT Where P= pressure of the gas, V= volume of the gas, n= no…

Q: What volume of hydrogen gas, in mL, is produced from 0.128 g Mg reacting with an excess of HCI at a…

A: A question based on the mole concept. Using the information about the number of moles of reactant…

Q: Each sketch below shows a flask with some gas and a pool of mercury in it. The gas is at a pressure…

A: It discusses the mercury levels in the J-tube experiment and provides information about…

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: Given that -  Temperature = 25°C = 298 K  Mass of calcium carbonate = 25.1 g  Total pressure = 911.0…

Q: 3. The reaction, MnO:(s) + 4 HCl(aq) → MnCl:(aq) + Cl:(g) + H;O(1) was being studied. 12.2 g of MnO;…

A: The balanced reaction taking place is given as, => MnO2 (s) + 4 HCl (aq) -------> MnCl2 (aq) +…

Q: The synthesis of ammonia from the elements is conducted at high pressures and temperatures: N2(g) +…

A: Given: Number of moles of NH3= 13 mol Number of moles of N2= 31 mol Number of moles of H2=93 mol The…

Q: A sample of solid potassium chlorate (KCIO3) was heated in a test tube and decomposed according to…

A: Aqueous tension :-  When a gas is collected on surface of water , water vapours are also present…

Q: A piece of sodium metal reacts completely with water as follows: 2Na(s) + 2H,0(D→ 2NAOH(aq) + H2(g)…

A: Recall the given equation as follows        2Nas + 2H2Ol →2NaOHaq + H2g Again recall the ideal gas…

Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: Answer: When hydrogen gas is collected over HCl, solution it would also be containing water vapor in…

Q: A sample of H2(g) was collected over water in a volume of 12.0 mL at 18 °C under atmospheric…

A: GivenV (H2) = 12.0 mL = 0.012 LTemperature = T = 18°C T = (18 +273.15) K = 291.15 KPressure = P =…

Q: How many moles re? (The vapor

A: Total pressure = 755 mm Hg Vapor pressure of water =23 mm Hg Partial pressure of O2 (PO2) = Total…

Q: Al(s) + 2NaOH(aq) + 6H2O(1)2NAAI(OH)4(aq) + 3H2(g) he product gas, H,, is collected over water at a…

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.