A 4.00-g sample of a mixture of CaO and BaO is placed in a1.00-L vessel containing CO2 gas at a pressure of 730 torrand a temperature of 25 °C. The CO2 reacts with the CaOand BaO, forming CaCO3 and BaCO3. When the reactionis complete, the pressure of the remaining CO2 is 150 torr.(a) Calculate the number of moles of CO2 that have reacted.(b) Calculate the mass percentage of CaO in the mixture.

Q: Aerosol cans carry clear warnings against incineration because of the high pressures that can…

A:

Q: Potassium chlorate decomposes when heated, giving oxy- gen and potassium chloride: 2 KCIO3(s) → 2…

A: Given information: Mass =87.6 g Pressure = 1.04 atm Temperature = 13.2 ℃

Q: A 20.0-L gas cylinder contains 4.80 g H2at 258C. What is the pressure of this gas?

A: Moles of H2 gas , n = mass molar mass = 4.802= 2.40 mol  Temperature , T = 258 + 273.15 = 531.15 K…

Q: A combustion reaction involving 628.0 g n-butanol (C,H100) occurs at 345.0 °C and 15.2 atm. What…

A: Given :-  Amount of butanol = 628.0 g  Temperature = 345.0 °C  Pressure = 15.2 atm  To calculate :-…

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: Solid manganese and nitrogen gas react to form solid manganese(IV) nitride. Write a balanced…

A: When solid manganese reacted with nitrogen gas, then Manganese(IV) nitride formed as product. 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: Kinetic molecular theory Consider two 1-L samples of gas: one is O2 and the other is CO2. Both are…

A: The above question can be solved as

Q: A 1.00 L flask is filled with 1.00 g of argon at 25 ∘C. A sample of ethane vapor is added to the…

A:

Q: Given that a bomb calorimeter has a volume of 1.5 L and a temperature of 25.00°C, what pressure of…

A: The chemical equation of combustion of sucrose is written as: C12H22O11 +12 O2→12CO2+11 H2O

Q: 2) Find the pressure exerted by 1.00 mol of N, gas in a 30.0 L container at 30 °C. [R = 0.0821 (L…

A: Given  Number of mole of N2 ( n )  =  1 mole  Volume ( V ) = 30 Liter  Temperature ( T )  =  30 ℃…

Q: A gas mixture contains 14.4 mol of NO and 6.25 mol of Br2.(a) Compute the mole fraction of NO in the…

A: a) The mole fraction of a species is defined as the number of moles of that species in the mixture…

Q: Use both the ideal gas law and van der Waals’ equa- tion to calculate the temperature of water vapor…

A: Van der Waals equation is used for real gases.  This equation relates the temperature, pressure,…

Q: Hydrogen gas can be formed by the reaction of methane with water according to the following…

A: We need to tell , why we use the molar volume value as 22.4 L at STP . The explanation is in next…

Q: Consider the reaction of 1.41 g Ca(s) with 107 mL of 0.325 M HBr(aq) according to the following…

A: The reaction taking place is given as, => Ca (s) + HBr (aq) -----> CaBr2 (aq) + H2 (g) Given :…

Q: What is the effect of the following on the volume of 1 mol of an ideal gas? (a) Temperature…

A: What is the effect of the following on the volume of 1 mol of an ideal gas? (a) Temperature…

Q: Hydrogen gas can be formed by the reaction of methane with water according to the following…

A: Ideal gas equation is  PV = nRT  Where,  P is pressure of the gas  V is volume of the gas n is no.…

Q: Ammonia and hydrogen chloride react to form solidammonium chloride:NH31g2 + HCl1g2¡NH4Cl1s2Two…

A: Given reaction is: NH3(g) + HCl(g) →NH4Cl(s) For NH3  =  Mass = 5 gms, Vol. = 2L, Temp = 25°CFor HCl…

Q: A gas mixture contains each of the following gases at the indicated partial pressures: N2, 226 torr…

A:

Q: If 56.2 grams of carbonic acid are sealed in a 2.00 L soda bottle at room temperature (298 K) and…

A: recall the given reaction           H2CO3aq→H2Ol+CO2(g) Find  moles of carbonic acid that contain…

Q: A mass of 9.60 g carbon monoxide is reacted with 4.84 g hydrogen to form methanol. CO(g) +2 H₂(g) →→…

A: CO(g) + 2H2(g) → CH3OH (g)Mass of CO  = 9.60 g Mass of H2  = 4.84 gThe reaction was performed in a…

Q: Calculate the volume of 1.62g of Helium gas at 25.670C and 872 mmHg.  (R = 0.0821 atm.L/mol.K

A:

Q: A mixture of NaHCO3 and Na2CO3 has a mass of 2.52 g. When treated with HCl(aq). 661 mL of CO2 gas is…

A: Given:…

Q: A gaseous "CFC" compound has a density of 5.456 g/L at 0.993 atm and 22.0°C. (a) Calculate the molar…

A: Given , density of CFC =5.456gL Pressure = 0.993 atm temperature, T=22°C =(22+273)K=295 K

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A: We are given a decomposition reaction and asked to calculate mass of reactant decomposed.

Q: a sample of NH3 is added to an initially evacuated 2.00L flask at 125 degree celsius, until the…

A: The balanced reaction of ammonia and oxygen can be given as

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.