Calculate the average molecular weight of air from its molar composition of 79% N2and 21% O2and (2) from its approximate composition by mass of 76.7% N2and 23.3% O2

Q: A balloon filled with NO2 (g) has an initial volume of 8 L.  If half the NO2 reacts to form N2O4 (g)…

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Q: Determine the volume of O2 (at STP) formed when 50.0 g of KClO3 decomposes according to the…

A: First convert the given grams of KClO3 to moles. Moles of KClO3=50.0g122.55g/mol=0.408 moles Given…

Q: How many moles of Nitrogen gas will react with 25 moles of Hydrogen gas in the following reaction?…

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Q: 3. Potassium permanganate is produced commercially by the this reaction: K.MnOafaq) Ch(g) KMNO(s)…

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

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

A: In the above question we have to find the volume of NH3(g) at the given data in the first step of…

Q: C 4H 8 +6O2 4CO2 + 4H 2OWhat is the stoichiometric ratio of H 2O to O 2? (Include units.)

A: Combustion reaction is the type of reaction of a hydrocarbon with oxygen gas. For hydrocarbons,…

Q: What volume of 1.85 M KOH will react completely to 100.0 g of Al2S3?

A: Here we are required to find the volume of 1.85M KOH required to react with aluminum sulphide

Q: The chemical composition of Mars.1 atmosphere is (mol%): CO2 90% and N2 8% and Ar 2%. The average…

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Q: A mixture of gases has the following composition by weight: 8.2 % 02, 12.5 % SO2 and 79.3 % N2.…

A: Average molecular weight of a mixture of a gas is equal to the algebraic sum of the product of…

Q: Suppose instead that the original cylinders contained ½ mol of O2 (g) and 3/2 mol of N2 (g),…

A: Number of moles of O2= 1/2 mol Number of moles of N2 = 3/2 mol

Q: Write the equation of the reaction. Is the initial reactant mixture, a stoi- chiometric mixture?…

A: Given that 10ml of chlorine and 50ml of hydrogen gas reacted and produced HCl gas. And asked for…

Q: Which of the following is equal to 1 mole of Carbon Dioxide (CO2) at standard temperature and…

A: Given information:Moles of carbon dioxide (CO2) at standard temperature and pressure = 1 mole

Q: A mixture of gases has the following composition by weight: 8.2 % O2, 12.5 % SO2 and 79.3 % N2.…

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Q: When 3.0 L of propane C3H8 gas is completely combusted to form water vapor and carbon dioxide at…

A: Answer is explained below.

Q: Fill in the blanks for the balancing stoichiometric coefficients for the following reaction _____…

A: the balancing stoichiometric coefficients for the following reaction will be:  as this is a…

Q: Vitamin C has a molar mass of 176.1 g. How many moles of vitamin C are there if 50.5 g of the…

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

Q: 3. Estimate the average molar mass of air assuming it contains 80 % N2 and 20 % 02.

A: Average molar mass can be calculated using the below equation

Q: 8. How many moles of hydrogen gas are needed to react completely with two moles of nitrogen gas? 3H2…

A: The reactants in a chemical reaction react as per their stoichiometric ratio of coefficients in…

Q: Assume that 13.5g of solid aluminum react with excess HCl according to the following balanced…

A: Calculation shown as follows

Q: The density of a certain gaseous fluoride of phosphorus is 3.93 g/L at STP. Calculate the molar mass…

A: Density of a gas can be expressed as, d=PMRT where P is pressure, M is the molar mass, R is the…

Q: What is the mole fraction of calcium chloride in 3.35 m CaCl2 (aq)? The molar mass of CaCl2 is 111.0…

A: Given: The molar mass of CaCl2 (calcium chloride) is 111.0 g/mol The molar mass of water is 18.02…

Q: What volume of N, measured at 24 °C and 733 mm Hg, will b produced by the decomposition of 11.4 g…

A: Given :-  2NaN3(s) → 2 Na(s) + 3 N2(g) amount of NaN3 = 11.4 g  temperature = 24°C  pressure = 733…

Q: What volume (L) of H2 gas is produced when 92 g Zn (atomic weight: 65.38 g/mol) is decomposed…

A: Given: The mass of zinc is 92 g and its molar mass is 65.38 g/mol. The temperature is 0°C and…

Q: At standard temperature and pressure (STP) conditions, what volume (in L) would be occupied by 6.17…

A: We have to predict the volume occupied by the gas.

Q: A gas that is produced when fruit ripens contain 85.62% C and 14.38% H by mass. The molecular mass…

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Q: A gas mixture in a line outlet has the following molar composition: 15.1% C2H6; 43.5% SO2; 8% O2 and…

A: First assume total moles to be 100.

Q: What is the mass of a 5.6 liter (STP) sample of CO2 gas?

A: Given data, CO2 gas = 5.6 L 1 mole of CO2 occupies = 22.4 lit at S.T.P

Q: what volume of NH3 at STP is produced when 32 g of N2 is reacted with an excess of H2?

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Q: 12.2p. Assuming air is about 79% nitrogen (N2) and 21% oxygen (O2), calculate the average molar mass…

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Q: Calculate the mass in grams for 5.42 x 1022 molecules of propane gas (C3H8) at STP. (Given that…

A: The data given in the following question- Molecules of C3H8 = 5.42 x 1022 Molar mass of C3H8 =…

Q: A gaseous compound has a density of 2.84 g/L at 1.00 atm and 45oC. What is the molar mass of the…

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Q: Using stoichiometry, calculate the volume of O2 gas at 1.25 atm and 18.0 ̊C, which forms when 10.5 g…

A: The given reaction is

Q: 1) a) Calculate the number of moles of NO2 that are present in a sample that is made up of 3.74 x…

A: One mole of any gas at STP occupies 22.4 L One mole substance contain 6.023 x 1023 molecules

Q: Determine the bulk density of CaF2 in g/cm3.  At. mass Ca = 40.08 g/mole.  At. mass F = 19.00…

A: In the given question we have to calculate the bulk density of CaF2 in g/cm3.   Given data:  No. of…

Q: What is the total volume of gases produced when 3.0 L of nitrogen trichloride (NCl3) decomposes into…

A: The reaction given is decomposition of NCl3 producing chlorine i.e Cl2 and nitrogen i.e N2 gas.…

Q: How many moles of water are produced from 3.50 moles of B2H6 react with excess O2 ?

A: B₂H₆ -Diborane B₂O₃ -Diboron trioxide

Q: What volume at STP is occupied by 0.682 g of BCl3(g)

A: Molar mass of BCl3 , Mwt = 117.17 g/mol Given weight, W = 0.682 g Moles = W ÷ Mwt = 0.682 ÷ 117.17 =…

Q: How many moles of oxygen are needed to burn 6.022 x1024 molecules of NH3?

A: To solve this problem first we have to calculate the number of moles of ammonia in the given number…

Q: Ethanol (C₂H6O) burns in air C₂H6O(1) +O2(g) → CO2(g) + H₂O (1) Balance the equation and determine…

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Q: How many moles of carbon dioxide, CO2, are produced if the reaction conditions are 325 K, 1.6 atm,…

A: We have given that  How many moles of carbon dioxide, CO2, are produced if the reaction conditions…

Q: Calculate the average m mass fraction from its 21% O2.

A: Let total moles of air = 100  So no. of moles of N2 gas = 79 no. of moles of O2 gas = 21

Q: A sample of gas was enriched to contain 2 % by mass of 15N with the remainder being 14N. Calculate…

A: • Average Atomic mass = Σ Mass of isotopes x Fraction of abundance• Molar mass of N2O = 2 x Atomic…

Q: Calculate the number of moles of water produced when 3.3 mol of Cu(NO3)2 are formed in the reaction.

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Q: 2Fe2O3+3C-4Fe+3CO2 The mole ratio for Fe2O3 to CO3 is what in fraction form

A: Stoichiometry refers to relationship between various quantities (mass, moles, equivalents) that are…

Q: Determine the volume of CO2 obtained from the combustion of 145 g propane, C3H8 (at 1741 mmHg and…

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Q: If 33.0 L of NH3 reacts completely with O2 in the following reaction, how many moles of H2O(g) are…

A: To determine the moles of ammonia at STP, Applying the ideal gas equation,PV = nRTAt STP we…

Q: Solve the problems and show your solution.  a) A balloon contains 0.500 mol of air which is 78.0%…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".