A 2.000 gram sample containing graphite (carbon) and an inert substance was burned in oxygen and produced a mixture of carbon dioxide and carbon monoxide in the mole ratio 2.00: 1.00. The volume of oxygen used was 747.0 milliliters at 1,092K and 12.00 atmospheres pressure. Calculate the percentage by weight of graphite in the original mixture.

Q: One molecule of hemoglobin will combine with four molecules of oxygen. If 1.0 g of hemoglobin…

A: The molar mass of a compound is mass of compound which is equal to 1 mole. Stoichiometry is related…

Q: If sufficient acid is used to react completely with 10.5 grams of Mg ,…

A: Magnesium reacts with hydrochloric acid to form magnesium chloride and hydrogen gas. The equation…

Q: A mixture of solid calcium oxide, CaO, and solid barium oxide, BaO, weighing 5.107 g is added to…

A: The objective of the question is to-a) Calculate the moles of carbon dioxide consumed by the…

Q: (A) A sample of carbon dioxide gas at a pressure of 1.14 atm and a temperature of 27.1 °C, occupies…

A: Ideal gas equation:  PV = nRT  At constant T and n  PV = constant P1V1 = P2V2  P1 = initial pressure…

Q: Consider the sample 7.85 moles of CO2 gas at 37°C and 1.2 atm. (a) Find the mass of 7.85 moles of…

A: The objective of the question is to calculate the mass, volume and density of 7.85 moles of CO2 gas…

Q: At 1.00 atm and 0 °C, a 5.04 L mixture of methane (CH₂) and propane (C₂H₂) was burned, producing…

A: We have to calculate the mole fraction of methane and propane

Q: Consider the following balanced reaction: 2 H₂S(g) +30₂(g) →2 H₂O(1) +2 SO 2(g) 5.00 L of H₂S and…

A:

Q: What

A: Mole fraction is the ratio of mole of component to the total mole of component

Q: The concentration of Argon in the atmosphere is 9340 ppmv. Express this value in terms of the…

A: Given data: Concentration of argon in atmosphere=9340 ppmv 1.To find percentage of the atmosphere…

Q: A 25.0 mL sample of 0.120 M hydrochloric acid was added to an excess of calcium carbonate. The…

A:

Q: If a 2.183 g sample of impure cobalt(III) carbonate is heated, and 500 mL of carbon dioxide is…

A: The question is based on reaction stoichiometry. we have been given quantity of carbon dioxide…

Q: A student collected 26.86 mL of H2 over water at 20.00 °C. The water level inside the collection…

A: Volume of gas V = 26.86 mL = 0.02686 L Temperature T1 = 20.00 °C = 20.00 + 273 K = 293 K  Barometric…

Q: Calculate the volume of OX 10.5 grams potassium chlor

A: Calculate the volume of oxygen gas produced at STP by complete decomposition of 10.5g of potassium…

Q: A bottle with the volume 4.03 L contains a sample of chlorine gas, Cl2, with a pressure of 198 Torr…

A:

Q: (b) The concentration of SO2 in air was found to be 50. ppb. Calculate its concentration in…

A: Given that,  Concentration of SO2 in air = 50ppb To find the concentration of SO2 in molecules/uL

Q: 4. How many moles of helium are contained in 890.0 mL at 21.0 °C and 99.97 kPa pressure?

A:

Q: A container with volume 0.2 m² contains of 2.5 moles of oxygen gas. Given that the molar mass of…

A:

Q: The earth's atmosphere consist of the 78.09% N2, 20.95% O2, 0.92% H2O, 0.03% CO2, and 0.01% other…

A: Percentage of CO2 or for solving question we can say that Mole fraction  of CO2 is 0.03

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A:

Q: The oxidation of trichloroethane results in the following reaction equation: 4 CaH,C|a() + 11 0, (g)…

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Q: 4. If your laboratory conditions were 743.4 torr and the volume of your apparatus was 165.5 mL,…

A:

Q: A 0.0665 g sample of aluminum metal reacts with hydrochloric acid to give 90.5 mL of hydrogen gas at…

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Q: 13. Ammonia (NH3) burns in oxygen gas to form nitric oxide (NO) and water vapor. How many liters of…

A: The reactants are ammonia(NH3) and oxygen gas, O2(g).  The products are nitric oxide, NO(g) and…

Q: When a certain free element (which is solid at room temperature) is heated, it forms vapor molecules…

A:

Q: Calculate the root mean square velocity, in m/s, of Cl2 at 273.0 K. Assume ideal gas behavior

A: Molar mass of Cl2 is 70.906 amu

Q: Consider the following balanced reaction: 2 H₂S(g) + 3 O2(g) → 2 H₂O(l) +2 SO₂(g) 5.00 L of H₂S and…

A: The objective of this question is to determine the volume of sulfur dioxide (SO2) produced when 5.00…

Q: What is the total volume of gases produced at 819 Kk and how 1.00 atm pressure when 320 g of…

A: The objective of this question is to calculate the total volume of gases produced when 320 g of…

Q: What is the experimental molar mass (that is, calculated from the data given and not taken from the…

A: Mass of magnesium = 0.0294 grams Temperature  of Hydrogen gas = 25.9°C  or 299.05K partial pressure…

Q: Ethane burns in air to give  and .   What volume of  (L) is required for complete reaction with 3.0…

A: Since temperature and pressure are constant, the number of moles is directly proportional to the…

Q: 1.703 g Al reacts with 1.95 mL of H2SO3 (g) at 30.0 °C and 611.1 kPa. Calculate the mass of…

A: Given data mass of Al = 1.703 g volume of H2SO3 = 1.95 mL = 0.00195 L Temperature : T=30 °C pressure…

Q: The volume of a sample of pure HCI gas was 239 mL at 24°C and 177 mmHg. It was completely dissolved…

A: Given that, Volume of HCl gas =239mL = 0.239LPressure  P = 177 mmHg *                     = 0.233…

Q: Acetone has the chemical formula C₂H₂O. a) Show the full electron configuration for C. How many…

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

Q: A reaction between liquid reactants takes place at 18.0 °C in a sealed, evacuated vessel with a…

A: Given: Mass of dinitrogen monoxide gas = 10 g Volume of vessel = 45 L Temperature = 18 °C = 18 +273…

Q: What is the concentration of CO2 in such air in terms of molarity, assuming 1 atm pressure and a…

A: Given: Pressure = 1 atm Temperature = 37 oC = 37+273.15 = 310.15 K   1 mole of any ideal gas…

Q: Hydrogen gas, oxygen gas, and water vapor are collected in eudiometer. The eudiometer contains…

A:

Q: What is the experimental molar mass (that is, calculated from the data given and not taken from the…

A: a). Pressure ( P ) = 727.5 torr = ( 727.5 / 760 ) atm = 0.957237 atm Temperature ( T ) = 22.2 °C =…

Q: The mass of an evacuated 275 mL flask is 143.562 g. The mass of the flask filled with 371 mbar of an…

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Q: In deep sea diving the composition of air a diver breathes must be changed in accordance with the…

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Q: For the given reaction, what volume of NO₂ can be produced from 0.80 L of O₂, assuming an excess of…

A:

Q: A 2.43 L volume of hydrogen measured at −150. °C is warmed to 100.°C. Calculate the volume (in L) of…

A: Given: Initial Volume V1 = 2.43 L Initial Temperature T1 = -150 oC= 123 K Final Temperature T2 = 100…

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.