Suppose a sample of refrigerant gas consisting of a simple mixture of the gases pentafluoroethane (C2HF5) and 111-trifluoroethane (C2H3F3) has a density of 2.30 g/L at 28 °C and 0.337 atm. A) Calculate the average molecular mass for this sample (in amu units) B) Calculate the volume percentage of C2H3F3 in the sample.

Q: Calculate the molar mass of a gas that has a density of 1.428 g/L at STP.

A:

Q: A mixture containing 0.538 mol helium, 0.315 mol neon and 0.103 mol argon is confined in a 7.00 L…

A: Total pressure can be calculated by calculating the total number of moles of all gases present…

Q: What will be the density of SO2 gas at 0oC and 1 atm

A: Given- Temperature = 0℃ = 273k Pressure = 1atm  Gas constant = 0.082 L atm mol / K Molecular weight…

Q: A 20.0-L cylinder containing 11.34 kg of butane, C4H10, was opened to the atmosphere. Calculate the…

A: An ideal gas is defined as the collisions between the molecules or atoms that are perfectly elastic…

Q: Calculate the density of nitrogen dioxide gas at 765 Torr and 20oC. (d=gL^-1)

A: The density of the gas and formula weight calculated in below by using ideal gas equation. PV = nRT…

Q: mixture contains 10.0 g N2 amd 10.0 g of CO2 in a 2.55 L container at 25 degrees C.    - Calculate…

A:

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…

A:

Q: At 33.0 ºC and a pressure of 752 torr, a gas was found to have a density of 3.33 g L-1. Calculate…

A:

Q: A sample of gas contains 0.1500 mol of CO(g) and 7.500×10-2 mol of O2(g) and occupies a volume of…

A: The given balanced reaction is 2COg+O2g→2CO2g. From the balanced equation it is clear that 2 mole CO…

Q: What is the ideal gas law? Why is it useful?

A: The behaviour of the gases can be easily described by certain quantitative relationships between…

Q: example in Part A has an initial volume of 42.0 L , and you have determined that it contains 1.60…

A:

Q: A sample of gas occupies 4.23L at 3.46 atm. what is the volume at 2.25 atm? (assume T is a constant

A: Given P1 = 3.46 atm V1 = 4.23 L P2 = 2.25 atm V2 = ?

Q: A gas at 813mmHg and 38 degrees celsius occupies a volume of 6.70L. Calculate its volume at STP.

A: Given Pressure of Gas =813 mmHg Temperature = 38o C Volume= 6.70 L To calculate Volume of the Gas at…

Q: The density of a sample of gas is 1.00 g/L at 745 mmHg and 109°C. What is the molar mass of the gas

A: The ratio of mass per volume of a given substance is called its density. The equation of state of a…

Q: A sample of gas contains 0.1800 mol of NH3(g) and 0.2250 mol of 02(g) and occupies a volume of 17.6…

A: The change in temperature, pressure, volume and number of moles of an ideal gas is given by ideal…

Q: A sample of gas contains 0.1500 mol of CH4(g) and 0.3000 mol of O,(g) and occupies a volume of 17.0…

A: The reaction taking place is given as  CH4 (g) + 2 O2 (g) --------> CO2 (g) + 2 H2O (g) Given :…

Q: A sample of propane gas, C3H8, was collected over water at 22.5 ºC and 780. torr. The volume of the…

A: Temperature, T=22.5oC=22.5+273=295.5K (1oC=273K)Total pressure, PTotal=780torrInitial volume of the…

Q: Given two gas samples: one of N2 and one of He. If the two samples are at the same temperature,…

A:

Q: 7. A mixture of three gases is contained in a steel tank with a volume of 2.50-L and has a total…

A: Given: Volume of the tank, V= 2.50 L Total pressure  of the gas, P = 1560 mm-Hg amount of Ne = 25%…

Q: Convert 797 mmHg to atm.

A: Since 1 atm = 760 mm Hg

Q: A sample of gas contains 0.1600 mol of CH4(g) and 0.1600 mol of H2O(g) and occupies a volume of 18.4…

A: Given information: 0.1600 mol of CH4(g) and 0.1600 mol of H2O(g) volume of 18.4 L at reactant side…

Q: At 535 mm Hg and 58.4 °C, a sample of carbon monoxide gas occupies a volume of 0.415 L. The gas is…

A:

Q: Consider three identical flasks filled with different gases. Flask A: N2 at 2.00 atm and 0 oC Flask…

A: Given: For three flasks: Temperature=0 oC

Q: If a gaseous mixture is made by combining 2.17 g Ar and 2.55 g Kr in an evacuated 2.50 L container…

A:

Q: glass container was initially charged with 2.00 moles of a gas sample at 3.75 atm and 21.7C Some of…

A: We know the Ideal gas equation is: PV = nRT From this equation we can write that:…

Q: A sample of gas contains 0.1800 mol of C2H4(g) and 0.1800 mol of H2(g) and occupies a volume of 14.9…

A: we know the expression for the ideal gas equation => PV = nRT where, P is the pressure, V is the…

Q: A sample of gas contains 0.1300 mol of CO(g) and 6.500×10-2 mol of O2(g) and occupies a volume of…

A:

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: A sample of gas contains 0.1600 mol of HBr(g) and 8.000×10-2 mol of Cl2(g) and occupies a volume of…

A: The balanced equation is as follows: 2HBr(g) + Cl2(g)→2HCl(g) + Br2(g)

Q: A sample of gas contains 0.1900 mol of HCl(g) and 9.500×10-2 mol of Br2(g) and occupies a volume of…

A: The expression of ideal gas equation is shown below: PV = nRT Where; P = pressure V = volume n =…

Q: Using the volume of the gas at STP, calculate the number of moles of gas at STP.

A: Dear student I have given answer to your question in the image format.

Q: Two gases, X and Y, react together to form Z as described by the following chemical reaction:…

A: In this question we have to use the ideal gas equation, i.e       PV = nRT  P is pressure , V is…

Q: in chemical analysis of a gas compound, it was observed that it contains 33.0% Silicon (Si) and…

A: Interpretation: The molecular formula of the compound is to be determined from the given…

Q: a gas weighs 4.25 g and has a volume of 956.0 mL at 665.0 torr and 35.0 °C. What is its molar mass?

A: Ideal Gas equation:-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: Some N, gas is mixed with some 0, gas, and the sketch below shows a representative sample of the…

A: Mole fraction = mole of gas /total mole Partial pressure = mole fraction × total pressure Given that…

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: 3.55 g sample of an unknown gas at 33 degrees Celcius and 1.10 atm is stored in a 2.55 L flask. What…

A: The density of the gas present in the flask can be calculated by diving its mass by volume.

Q: Which of the following statements is TRUE? D) At low temperatures, intermolecular forces become…

A: "Kinetic Theory of Gases" narrates that the gaseous particle with constant velocity possesses…

Q: 0.0380g of Mg strip reacted completely with 6 M HCl in the gas buret of 35.8 mL oh hydrogen gas is…

A:

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:

Q: Suppose a sample of refrigerant gas consisting of a simple mixture of the gases C2HF5 and CH2F2 has…

A: Given: Density of mixture = 1.92 g/L. Pressure of mixture = 0.625 atm. Temperature = 31 oC And the…

Q: Some N, gas is mixed with some O, gas, and the sketch below shows a representative sample of the…

A: To calculate mole fractions, we would consider the given molecules as a mole and count moles of both…

Q: A glass bulb contains an unknown gas. The gas is either CO2, SO2, C2H6, or CH3F.  Here is some data…

A: We know, P1V1/T1 = P2V2/T2 Where, P1 = initial pressure V1 = initial volume  and T1 = initial…

Q: A sample of gas contains 0.1400 mol of CH4(g) and 0.2800 mol of O2(g) and occupies a volume of 19.6…

A: Gay-Lussac's Law of Gaseous Volume:-When gases react together to form other gases and when all…

Q: A mixture of He, Ne and Ar has a total pressure of 4.55atm and is found to contain 0.22mol He,…

A: Partial Pressure Total pressure of a system is the sum of pressure of all the individual gas.…

Q: A sample of gas contains 0.1700 mol of CH4(g) and 0.1700 mol of H2O(g) and occupies a volume of 19.2…

A: Given: Initial moles of CH4 = 0.1700 mol Initial moles of H2O = 0.1700 mol Initial volume of gas =…

Q: At 2.00oC and 1.00 atm, a sample of gas occupies 30.0 mL. If the temperature increases to 30.0oC and…

A:

Q: The density of 1.00 mol of an unknown gas at a temperature of -66oC and a pressure of 2,203 torr is…

A: Convert unit of temperature into K and Pressure into atm:

Q: A sample of gas contains 0.1500 mol of CO(g) and 0.1500 mol of N0(g) and occupies a volume of 11.5…

A:

Q: A sample of Cl2 with a pressure of 1.84 atm and a volume of 290 mL is allowed to react with excess…

A: A sample of Cl2 with a pressure of 1.84 atm and a volume of 290 mL is allowed to react with excess…

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.