A 5.80 g sample of lead nitrate Pb(NO3)2 molar mass = 331 g/mol is heated in an evacuated cylinder with a volume of 3.25L. The salt decomposes when heated according to the equation: 2Pb(NO3)2 --> 2PbO + 4NO2 + O2 Assuming complete decomposition, what is the pressure in the cylinder after decomposition and cooling to a temperature of 250 K?

Q: A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of…

A: From ideal gas law,                        PV=nRT where P is pressure, V is volume, n is number of…

Q: Some indoor air-purification systems work by converting a little of the oxygen in the air to ozone,…

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Q: Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following…

A: Given information: temperature is 20 °C = 20+273 = 293 K pressure of wet gas 753 mm Hg vapor…

Q: A flask weighs 50.1305g when clean, dry, evacuated, 150.2410g when filled with water (density =…

A:

Q: Consider the reaction:2 SO2( g) + O2( g) →2 SO3(s)(a) If 285.5 mL of SO2 is allowed to react with…

A: a) 2SO2(g)+O2(g)→2SO3(s)2SO2(g)+O2(g)→2SO3(s) For sulfur dioxide, 285.5 mL SO2×1 mol SO2/22400 mL…

Q: Oxygen gas can be prepared by heating potassium chlorate according to the following equation:…

A: Vapor pressure of water = 23.8 mm Hg Pressure of wet gas = 757 mm Hg Temperature = 25 °C = 25 + 273…

Q: When designing a model air bag, how many grams of NaHCO3 (Molar Mass = 84g/mol) needs to be added to…

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Q: A sample of phosphorus that weighs 3.243 × 10−2 g exerts a pressure of 31.89 kPa in a 56.0-mL bulb…

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Q: Acetylene gas can be produced by slowly reacting calcium carbide with water. CaC2(s) + 2H2O(l) ➡…

A: Given :  The given chemical reaction is  CaC2(s) + 2H2O(l) ➡ C2H2(g) + Ca(OH)2(s)   Mass of CaC2 =…

Q: Chlorine dioxide, ClO2, is sometimes used as a chlorinating agent for water treatment. It can be…

A: Given reaction is :  Cl2 (g) + 4NaClO (aq) ----------> 4NaCl (aq) + 2ClO2 (g) Volume of Cl2 = V…

Q: A mixture of hydrogen gas and oxygen gas exerts a total pressure of 3.0 atm on the walls of its…

A: Given total pressure = 3.0 atm Partial pressure of hydrogen = 1.65 atm Mole fraction of oxygen can…

Q: A study of the effects of certain gases on plant growth requires a synthetic atmosphere composed of…

A: (a)Mole fraction = (mole %) / 100 Partial pressure = mole fraction × total pressure Mole fraction of…

Q: When hydrochloric acid is poured over potassium sulfide, 42.9 mL of hydrogen sulfide gas is produced…

A: Given: Pressure = 752 torr Temperature = 25.8 0C Volume of hydrogen sulfide = 42.9 mL The chemical…

Q: A 0.6333 g sample of a metal carbonate was reacted with hydrochloric acid. The carbon dioxide gas…

A: We have given that the CO2 is collected at temperature of 26.0°C T = 26 + 273.15 = 299.15 K…

Q: A 39.4 g sample of halothane is 0.200 moles. At STP, what is the concentration (% v/v) of 39.4 g of…

A: Given: Mass of halothane = 39.4 g. Moles of halothane = 0.200 mol. Volume of container = 224 L And…

Q: Water can react with carbon dioxide to form hydrogen carbanate according to the following chemical…

A: Given :-  H2O (I) + CO2 (g) > H2CO3 (aq)  Mass of H2O = 421 g  Volume = 42.5 L  Temperature =…

Q: Sodium azide is used in air bags for automobiles. The gas produced from the decomposition of sodium…

A: Given: The volume (V) of nitrogen gas is 45 L The pressure (P) of nitrogen gas is 1.0 atm The…

Q: A mixture of 2.81 moles of H2, 2.57 moles of NH3, 2.65 moles of CO2, and 4.55 moles of N2 exert a…

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Q: What will the total pressure be in a 2.50L flask at 25 degrees Celcius if it contains 0.016 mol of…

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Q: The catalytic decomposition of hydrogen peroxide yields oxygen gas and water, according to the…

A: Given:Volume of hydrogen peroxide=75.3 mLTemperature= 25oCPressure=0.976 atmVolume of original…

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: The particulate model shown below represents the moles of particles present in the container after…

A: The reaction representation given is, Given: Total pressure after the reaction = 12 atm.

Q: Atmospheric pressure on the peak of Mt. Everest can be as low as 150. mm Hg, which is why climbers…

A: Given data, P1=30,400 mm HgP2=150 mm HgV1=10 L To calculate the new volume.

Q: What is the partial pressure of CO₂ at 468.2 K in a 25.0 L fuel combustion vessel if it contains…

A: Since you have asked multiple questions, we will solve the first question for you as per our…

Q: 3) 1.11 x 103 moles of nitrogen gas are contained in a 400. mL container at 25.1 °C. If the…

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Q: Part A- Applying the Kinetic-Molecular Theory Consider two gas cylinders of the same volume and…

A: The statement' The C3H8 and CH4 molecules have the same average kinetic energy' is correct.

Q: Gaseous iodine pentafluoride, IF₅, can be prepared by the reaction of solid iodine and gaseous…

A: Percentage of IF5 = 20.06 %

Q: The catalytic decomposition of hydrogen peroxide yields oxygen gas and water, according to the…

A: Given,Volume of gas, O2 collected over water, V = 75.3 mL = 0.0753 L   (1 mL = 0.001 L)Temperature,…

Q: A rigid gas cylinder contains 370 grams of oxygen gas at 30 atm and 25oC. What must be the final…

A: According to the our policy we should solve one question, if any subparts present then first three…

Q: On heating, potassium chlorate ( KClO3 ) decomposes to yield potassium chloride and oxygen gas. In…

A: A balanced chemical equation is an equation which contains same elements in same number on both the…

Q: Gaseous iodine pentafluoride, IF, can be prepared by the reaction of solid iodine and gaseous…

A: Given: Volume = 10 L Mass of I2 = 17 g Pressure of F2 = 2 atm

Q: 5. An engineer pumps 5.00 mol of carbon monoxide gas into a cylinder that has a capacity of 20.0 L.…

A: The pressure of an ideal gas will be directly proportional to the temperature of the gas and…

Q: 7.If container "A" is occupied by 1.0 mole of oxygen gas (molar mass 32.0 g/mol) while container "B"…

A: Using ideal gas equation,  PV=nRT  If T and P are constant then volume is directly proportional to…

Q: of H2 gas , Collected over water at the atmospheric pressure of 751mm Hg and a temperature of 21.0…

A: The three gas laws  namely  Boyles law , charles law  and avagadros law  are combined   to obtain…

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

A:

Q: To prevent a condition called the “bends,” deep-sea divers breathe a mixture containing, in mole…

A: Assuming we have total 100 moles  => moles of oxygen = 10 % of 100 = 10 moles moles of nitrogen =…

Q: A 0.338-g sample of gas occupies 125 mL at 60. cm of Hg and 25°C. What is the molar mass of the gas?

A: It is given that the mass of the sample is 0.338 g and occupies 125 mL at a pressure of 60 cm Hg at…

Q: CaCO3(s)⇄CaO(s)+CO2(g) When heated strongly, solid calcium carbonate decomposes to produce solid…

A: Moles of CaCO3 used = 2.0 mol Volume of vessel = 100.0 L The time at which pressure In the vessel…

Q: A 3.19-g mixture of solid CaO and solid ZnO is reacted in a 2.00-L container with CO2(g) at a…

A: The chemical reactions taking place are: CaO(s)+CO2(g)→CaCO3  (s)-----1ZnO(s)+CO2(g)→ZnCO3(s)…

Q: A 2.5 L canister under a pressure of 150 kPa at 20 °C is compressed to a volume of 1.5 L at 35 °C.…

A: The answer to the following question is-

Q: Calculate the density of methane gas (CH4) in grams per liter at 25 °C and 0.978 atm

A: As per guidelines, only 1st part has to be answered. Given that pressure of gas is 0.978 atm  And…

Q: gaseous mixture contains 4.56 g propane, C3H8, and 1.22 g chloroform, CHCL3. Assuming that both…

A: Mass of propane  = 4.56 g Mass of chloroform = 1.22 g V = 100 ml = 0.1 L  T = 28oC  = 301 K Molar…

Q: A small amount of oxygen gas may be prepared in the laboratory by the decomposition of potassium…

A: The given equation is The amount of KClO3 is 1.54 g, temperature is 250C and total pressure is…

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 study of the effects of certain gases on the plant growth requires a synthetic atmosphere composed…

A: The mole percentage of each gas is the percentage of the number of moles of each gas in the…

Q: CaCO3(s)⇄CaO(s)+CO2(g)  When heated strongly, solid calcium carbonate decomposes to produce solid…

A: Given information:  Moles of CaCO3 = 2.0 mole. Volume of vessel = 100 Litre Temperature = 898°C +…

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

A:

Q: Concentrated hydrogen peroxide solutions are explosively decomposed by traces of transition metal…

A: Given: Temperature = 298K Pressure =744torr

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.