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: When gaseous F₂ and solid I₂ are heated to high tempera-tures, the I₂ sublimes and gaseous iodine…

A: Given   The pressure of fluorine gas is 350 torr. The mass of solid iodine is 2.50 g. The volume of…

Q: In an experiment, hydrogen sulfide gas is collected in a 1.25 L flask at 21 degrees celsius and 758…

A: Given, Volume  = 1.25 L Temperature = 21°C = 21+273 = 294 K Pressure = 758 torr Mass of H2S = ?

Q: (a) What is the total volume of gaseous products,measuredat 350C and 735 torr, when an automobile…

A: (A) The component of gasoline, i.e. the octane (C8H18) when burnt in presence of oxygen, it gives…

Q: 5.58 A 2.30-g snmple of white solid was vaporized in a 345-mL vessel. If the vapor has a prezsure of…

A:

Q: A gas mixture contains He, Ne, and H,S at partial pres- sures of 125, 175, and 225 mm Hg,…

A: Dalton's law of partial pressure states that, the total pressure of a mixture of gases occupying a…

Q: Acetylene (CH2(g)) is an important fuel in welding. A sample is produccd in a laboratory by a…

A:

Q: Q2. A piece of dry ice (solid carbon dioxide) with a mass of 5.50 g is placed in a 10.0 L vessel…

A:

Q: For the following reaction: 2H2O(g) + Co(s) ⟶ CoO2 (s) + 2H2 (g) What volume of H2 at a pressure of…

A:

Q: What volume of oxygen gas at 298K and 680torr will react completely with 5.0L ok co gas at the same…

A:

Q: ● At 30.0 °C, Pvapor = 31.8 mmHg ● R = 0.08206 L-atm/mol-K = 62.36 L-torr/mol-K ● MWAl = 26.98 g/mol…

A: We would use stoichiometric relations to calculate experimental mass of aluminium used .  Then using…

Q: If the balloon described in Question 6.44 is released into the air and rises to an altitude of…

A:

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: If 3.47 g Ar are added to 4.74 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: The pressure exerted by Ar is, PV = nRTP = nRTV ......(1) No. of moles of Argon = 3.47g/(40gmol-1) =…

Q: If 3.75 g Ar are added to 4.26 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: Given mass of argon = 3.75 g Molar mass of argon = 39.95 g/mol Number of moles of argon (n) =…

Q: When 15.0 g of fluorite (CaF2) reacts with excess sulfuric acid, hydrogen fluoride gas is collected…

A: . The reaction is as follows CaF2(s) +H2SO4(excess) →2HF(g) +CaSO4(s) Moles of calcium fluorite…

Q: In the first step of the industrial process for making nitricacid, ammonia reacts with oxygen in the…

A: Since 4 moles of ammonia is required to react with 5 moles of oxygen from the above balanced…

Q: If the mercury in a manometer raises 16.0 millimeters due to a change in pressure, what is the…

A: Pressure of a substance can be expressed in different units which are atm, mm Hg, bar and pascal.

Q: A 1.00-L gas sample at 100.°C and 500. torr contains 53.0% helium and 47.0% xenon by mass. What are…

A:

Q: If the mercury in a manometer raises 30.0 millimeters due to a change in pressure, what is the…

A: Mercury manometer raises=30.0 mm Pressure (in atm)=? 1 atmosphere (atm) = 760 millimeters of Hg…

Q: has a volume of 100 dms 500 mmlg. at 320 mmtg. prvided temporature is constant- 2 gas hes a volume…

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

Q: A 1.25-g sample of CO2 is contained in a 750.-mL flask at 22.5 °C. What is the pressure of the gas?

A: The given data contains, Volume = 0.75 L. Temperature = 295.5 K. mass = 1.25 g

Q: 17. A sample of neon occupies 105 Lat 28°C under a pressure of 985 torr. What volarne woukd the gas…

A: Using the ideal gas equation  PV = nRT  Where  P= pressure  V = volume  n = no of moles  R = gas…

Q: A chemist weighed out 5.14 gm of a mixture containing unknown amounts of BaO (s) and CaO(s) and…

A: Given values are the following. Pinitial of CO2=750 torr=750760 atm=0.987 atmPfinal of CO2=230…

Q: A gas occupies a volume 1.27 L and 25 Celsius is adjusted to new volume of 1.02 L at standard…

A:

Q: A sample of Zn(s) is reacted with HCl(aq) to form hydrogen gas. The H2 gas bubbles out of aqueous…

A: The balanced equation for the reaction of Zn(s) with HCl(aq) is: Zn(s) + 2HCl(aq)  ---->…

Q: 0.125 g of Neon is in a 225.0 ml flask at 22.5°C. Determine the pressure in the flask in atm and in…

A: Given: Mass of Neon = 0.125 g Molar mass of Neon = 20.1797 g/mol Volume = 225.0 mL = 0.225 L…

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

Q: Calcium carbonate, CaCO3(s), the principal compound in limestone, decomposes upon heating to CaO(s)…

A: Given, P = 1.3 atm V = 250 mL T = 310C

Q: Ammonia is formed from nitrogen and hydrogen according to the following unbalanced equation N2 (g) +…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: What is the temperature, in degrees Celsius, of 5.23 moles of helium (He) gas confined to a volume…

A: The ideal gas equation is given by: PV = nRT Here, P is the pressure, V is the volume, T is the…

Q: A weather balloon containing 600. L of He is released nearthe equator at 1.01 atm and 305 K. It…

A: The ideal gas equation is given as- PV= nRT      (Equation-1) where, P is the pressure of the gas V…

Q: At 118oC, the pressure in a 12.0 L flask is 847 mm Hg. How many moles of gas are in the flask?

A: The ideal gas equation is shown below:P V = n R T Where; P = pressure of the gas V= volume of the…

Q: What mass of butane, in g, will be needed to fill a 3.12 L container to a pressure of 858 torr at a…

A:

Q: A sample of O, with a pressure of 1.31 atm and a volume of 243 mL is allowed to react with excess…

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

Q: under thermal decomposition, potassium chlorate degrades into potassium chloride and oxygen by the…

A:

Q: A 4.17 g4.17 g sample of NH3NH3 gas and a 4.17 g4.17 g sample of HClHCl gas are mixed in a 2.00…

A: GIVEN: NH3 gas sample =  4.17 g HCl gas sample = 4.17g Volume of flask =2.00 L Temperature=25oC To…

Q: The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes…

A:

Q: O A tank contains nitrogen N2 at an absolute pressure of 2.5 atm. What will be the pressure of an…

A:

Q: On our campus, there are approximately 30.000 students who use 2.5 x 10° kJ of energy per day.…

A:

Q: What volume of hydrogen gas is produced when 33.6 g of iron reacts completely according to the…

A: Given, Mass of iron = 33.6 g. Temperature = 25oC = 298K. Pressure = 1atm. Moles of hydrogen gas…

Q: What is the pressure of N2 (g)  in Torr if 0.582 atm of O2 (g) and  965Torr of He(g)  are mixed with…

A: Given , Total pressure = 2250 mmHg Since , 1 torr = 1mmHg  So, Total pressure  = 2250 torr Partial…

Q: A 3.75 L sample of gas from a chemical plant is collected and analyzed st 25 degrees celisus. It is…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: What volume of hydrogen gas is produced when 87.7 g of sodium reacts completely according to the…

A:

Q: Xenon hexafluoride was one of the first noble gas com-pounds synthesized. The solid reacts rapidly…

A:

Q: A 1.42-g sample of helium and an unknown mass of O2 aremixed in a flask at room temperature. The…

A: Since the Temperature and volume are same for both He and O2  And from ideal gas equation we know…

Q: From the experiment, it was found that the external pressure was 1.05 atm at 30.0 °C, and the volume…

A: Metal reacts with acid to given Hydrogen gas.  To calculate the pressure of dry air , pressure of…

Q: what is the temperature in degrees celsius of 5.23 moles og helium (He) gas confined to a volume of…

A: Here given, Pressure (P) = 5.23 atm Volume (V) = 5.23 L Mole (n) = 5.23 mol Gas constant (R) =…

Q: O2 is prepared by decomposing calcium chlorate (Ca(ClO3)2) and collecting 255 ml sample over water…

A: The balanced chemical equation that depicts the decomposition of calcium chlorate can be written as:…

Q: 9) A 0.780 L flask is filled with 2.88 mol of acetylene gas (C2H2). Given that the pressureexerted…

A: GivenVolume of the gas = 0.780LMoles of gas= 2.88Pressure of the gas = 3.60 atmTemperature of the…

Q: Calculate the final pressure in torr when the volume of a gas 750 ml at 29.7psi is released into a 2…

A: From Boyle’s Law that states that at a constant temperature the pressure of the given mass of an…

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.