An unknown compound is 53.5% C, 11.2% H, and 35.5% O. A. Determine the empirical formula. B. If a 2.35g gaseous sample of this compound occupies 565mL at 875mmHg and 30.0oC, what is the molar mass of this compound? C. Determine the molecular formula of this gas.

Q: A 2.65 g2.65 g sample of an unknown gas at 73 ∘C73 ∘C and 1.00 atm1.00 atm is stored in a 2.75 L2.75…

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Q: A 2.85 g sample of an unknown gas at 37 °C and 1.00 atm is stored in a 1.05 L flask. What is the…

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Q: A mixture containing 0.550 mol Cl2, 0.443 mol Br2, and 0.520 mol I2 are confined to a 10.00 L vessel…

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Q: A 3.35 g sample of an unknown gas at 23 C and 1.10 atm is stored in a 3.05 L flask. What is the…

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Q: 5.0 grams Ne and 5.0 grams Cl2 are mixed together in a 5.0 L flask at 298K. Calculate: 1) the moles…

A: Mass of Ne = 5 g Mass of Cl2 = 5 g Volume of flask = 5 L temperature = 298 K

Q: A 2.55 g sample of an unknown gas at 31 ∘C and 1.05 atm is stored in a 2.85 L flask. What is the…

A: First the density is determined by using density formula as shown below,

Q: References Use the References to access important values if needed for this question. A 1.97 gram…

A: Given, Mass of sample = 1.97g. Pressure = 692mmHg = 0.911atm. Volume = 1.15L. Temperature = 56oC =…

Q: Exactly 250cm³ of a gas at STP weighs 0.291g. The composition of the gas is as follows: C,92.24%,…

A: Given that, At STP, 22400 cm3 is the molar volume of a gas The weight of 250 cm3 of gas=0.291 g So,…

Q: 1. When a certain acid and a certain base are mixed together, a reaction occurs that produces a gas…

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Q: At 1.391.39 atm and 22.75 ∘C22.75 ∘C, a 2.772.77 g sample of gas occupies a volume of 15501550 mL.…

A: An ideal gas is an hypothetical gas where the particles are randomly moving with no inter-particle…

Q: Suppose a sample of refrigerant gas consisting of a simple mixture of the gases pentafluoroethane…

A: Given: Density = 1.79g/mol Pressure = 0.447 atm

Q: A gas with a mass of 95.14g occupies 48.8L at 659mmHg and 25.3°C. What is its molecular weight? Use…

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Q: 2.90 x 10^-3g of unknown gas are produced at 298k and 1.00 atm. The volume of gas generated was 3.52…

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Q: At 46 degrees Celsius and 0.880atm, a gas occupies a volume of 0.600L. What volume will it occupy at…

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Q: how many grams of gas are present in a sample that has a molar mass of 75.0 g/mol and occupies a 3 L…

A: An ideal gas is a potential gas made up of several uniformly traveling point particles that do not…

Q: According to the ideal gas law, a 0.9244 mol sample of oxygen gas in a 1.983 L container at 268.1 K…

A: As per Bartleyby guidelines i answered only first question so please don't mind. Kindly post other…

Q: Gases: Out of exhaustion due to this problem set [including the problem sets in GPHY202] you exhaled…

A: The percentage of component or gas in mixture  of gases is equal to the mole fraction of that gas.…

Q: A 1.35 g sample of an unknown gas at 53 °C and 1.05 atm is stored in a 2.75 L flask. What is the…

A: Given: Pressure = 1.05 atm  Volume= 2.75 L  R = gas constant = 0.0821 L atm mol-1K-1 T = temperature…

Q: A 3.55 g sample of an unknown gas at 59 °C and 1.05 atm is stored in a 1.05 L flask. What is the…

A: a) Since mass of gas is given = 3.55 g  and volume of gas = volume of flask = 1.05 L hence density…

Q: In the lab students reacted zinc with acid to generate and collect hydrogen gas, according to the…

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Q: What is the mass of a 3.00 L sample of a gas if this volume was measured at 40oC and 99.2 kPa?…

A: Let the pressure, volume, number of moles and mass of the gas at 40◦C (313K) be P1, V1, x and W1…

Q: A 1.95 g sample of an unknown gas at 67 °C and 1.05 atm is stored in a 2.05 L flask. What is the…

A: The molar mass of a chemical compound is defined as the mass of a sample of that compound divided by…

Q: The volume occupied by one gmole of an ideal gas at 25 °C and 1 atm is most nearly:a. 2.05 Lb. 22.4…

A: Given data contains, Mole of ideal gas is 1 mole. Temperature is 25°C=298.15 K Pressure is 1 atm.

Q: A gas mixture is made by combining 7.1 g each of Ar, Ne, and an unknown diatomic gas.  At STP, the…

A: The mass of each Ar, Ne and unknown diatomic gas present in mixture is 7.1 g. The volume occupied by…

Q: A 4.05 g sample of an unknown gas at 33 °C and 1.05 atm is stored in a 3.05 L flask. What is the…

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Q: a) 1.488×10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 81.2 s. Under…

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

Q: What is the total pressure in atmospheres of a gas mixture that contains 1.00 g H2 and 8.00 g Ar in…

A: Mass of H2 = 1 g Molar molar of H2 = 2 g mol-1 Mass of Ar = 8 g Molar molar of Ar =  40 g mol-1…

Q: A 1.25g gas sample occupies 663ml at 25.0C and 1.00 atm. What is the molar mass of the gas

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Q: A 1.95 g sample of an unknown gas at 61 ∘C and 1.00 atm is stored in a 1.45 L flask. What is the…

A: Given information:Mass of sample = 1.95 gTemperature = 61 °CPressure of gas = 1.00 atmVolume of…

Q: A 3.65 g sample of an unknown gas at 61 °C and 1.05 atm is stored in a 2.35 L flask. What is the…

A: We use ideal gas equation to find number of moles and then we use it for molar mass calculation.

Q: A 1.25 g sample of an unknown gas at 81 °C and 1.00 atm is stored in a 1.05 L flask. What is the…

A: Given, mass of unknown gas sample m = 1.25 g            temperature T = 81 °C = 81+ 273 K = 354 K…

Q: A vessel of a certain volume contains two ideal gases, let's call them A(g) and B(g). The mole…

A: Assuming the total moles of gas initially is y. Hence moles of A in vessel initially = mole fraction…

Q: mixture of unreacted gas which consists of 21 g of nitrogen gas and 6 g of hydrogen gas is placed in…

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Q: A 3.35 g sample of an unknown gas at 23 'C and 1.10 atm is stored in a 3.05 L flask. What is the…

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Q: If a gas occupies 88.0 L at 30.0 kPa, what volume will it occupy at 900. kPa, assuming the pressure…

A: Question 1: Suppose, the gas will occupy volume V at 900 kPa pressure Here, the required formula is:…

Q: Two gas tanks contain different gases. The pressure, volume, and temperature of eacn gas are shown…

A: Factors affecting the pressure of the gas: Volume- If the volume inside the container is decreased…

Q: How many moles of gas are pressured in a 25L chamber containing a pressure of 750 mmHg at – 25 deg…

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

Q: A 3.25 g sample of an unknown gas at 37 °C and 1.00 atm is stored in a 1.85 L flask. What is the…

A: Mass of sample = 3.25 g Volume = 1.85 L Temperature = 37 ◦C or 310.15 K Pressure = 1 atm

Q: A 1.95 g sample of an unknown gas at 67 °C and 1.05 atm is stored in a 2.05 L flask. What is the…

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Q: A 1.85 g sample of an unknown gas at 47 °C and 1.00 atm is stored in a 2.85 L flask. What is the…

A: Given: Mass, m =1.85 g Volume , V =2.85 L Pressure, P = 1.00 atm Temperature, T = 47 +273 = 320 K…

Q: 2K(s)+2H2O(l)→2KOH(aq)+H2(g) If 0.497 grams of potassium reacts with an excess amount of water,…

A: Answer :- 160.27 mL of H2 will be produced. Solution :-  Balanced chemical reaction between…

Q: A 2.65 g sample of an unknown gas at 21 °C and 1.10 atm is stored in a 1.05 L flask. What is the…

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Q: The molar volume of isopentane (C5H12) is 1.00 L at 503 K and 30.0 atm. a. Does isopentane behave…

A: According to the ideal gas equation the pressure of 1 mole of a gas at 503 K that occupies 1.0L is :…

Q: Evan H 3 Wing Consider the following unbalanced chemical equation: (501) Cu2 S(s) + O2(9) → Cu, O(s)…

A: The balanced equation is  2Cu2S + 3O2  →  2Cu2O + 2SO2. Then we calculate the moles of respective…

Q: A 2.25 g sample of an unknown gas at 79 C and 1.05 atm is stored in a 1.45 L flask, What is the…

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Q: gas mixture is made by combining 8.8g of each Ar, Ne, and an unknown diatomic gas. At STP, the…

A: The total number of moles of gas present in the mixture can be calculated using molar volume of a…

Q: A 3.85 g sample of an unknown gas at 73 °C and 1.05 atm is stored in a 1.35 L flask. What is the…

A:

Q: An unknown gas has a density of .355g/L at 17 celsius and 189mm Hg. Calculate the molar mass of the…

A: Since density = mass / volume  Hence mass of gas = density X volume = 0.355 V hence moles of gas =…

Q: A 1.05 g sample of an unknown gas at 61 "C and 1.05 atm is stored in a 2.55 L flask. What is the…

A: Mass per unit volume is known as density. S.I unit of density is g/cm3 or kg/m3. Other units of…

Q: A 3.05 g sample of an unknown gas at 21 °C and 1.10 atm is stored in a 1.95 L flask. What is the…

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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.