720 mL of H2 gas at 0°C and 126.6 kPa is changed to S.T.P. What will be its new volume ?

Q: A newly discovered gas has a density of 2.27 g/L at 26.0 °C and 739 mm Hg. What is the molar mass of…

A: Given: Density of gas = 2.27 g/L. Temperature = 26.0 oC And the pressure of gas = 739 mm Hg.

Q: A sample of a gas in an 11.2L11.2L container is at 1.0atm1.0atm and 0°C0°C, as shown. The mass of…

A: Given :  Volume = 11.2 L  Pressure = 1 atm  Temperature = 0°C = 273 K  Mass of sample = 16 g

Q: Mn02(s) + 4HCI(aq) MnC12(aq) + 2H2O(1) + C12(g) How many liters of chlorine gas at 298 K and 0.950…

A: Solution We'll begin by hard the amount of mole in twelve g of MnO2. this will be obtained as…

Q: (a) Are you more likely to see the density of a gas reported ing/mL, g/L, or kg/cm3? (b) Which units…

A: a) The units which are more likely for density are g/ml and Kg/lit. b) Since the unit of Pressure =…

Q: Ammonia is produced industrially by reacting N2 with H2 at elevated pressure and temperature in the…

A: Given data, Volume(V)=7.82×103LTotal pressure(P)=245barTemperature(T)=677oC=677+273.15=950.15K

Q: A 0.02847 g sample of gas occupies 10.0 mL at 292.0 K and 1.10 atm. Upon further analysis, the…

A: Recall ideal gas equation              PV=nRTAs moles of gas(n)=mass of gasmmolar mass of gas(M)…

Q: An unknown gas weights 34.2g and occupies 67 mL at 2.0 atm and 24.5 Celsius. what is its molar mass?

A: Given, Mass of unknown gas = 34.2 g Pressure, P = 2.0 atm Volume, V = 67 mL = 0.067 L    (1 mL =…

Q: 10(b) A certain sample of a gas has a volume of 20.00 dm3 at 0 °C and 1.000 atm. A plot of the…

A: According to the plot of the experimental data, volume is linearly proportional to temperature, θ in…

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: A gas occupies 17 L at a pressure of 102.3 kPa and 299 K. If the gas is cooled to 250 K and the…

A: For the phase change of the ideal gas the temperature, pressure, and volume of the initial state and…

Q: A 12.5g gas sample occupies 663ml at 25.0c and 1.00 atm what is the molar mass of the gas

A: Ideal gas law can be written as PV = nRT Where, P = pressure V = volume n = moles of gas R = Gas…

Q: The volume of a gas at 27.0C and 0.200atm is 80.0mL. What volume will the same gas sample occupy at…

A: Given, Initially, Pressure (P1) = 0.200 atm Volume (V1) = 80.0 mL = 0.08 L Temperature (T1) = 27°C =…

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…

A:

Q: A pure gas has a density of 1.80 g/L at 20.0 °C and 1.88 atm. Calculate the molecular mass of the…

A: It is given that the density of a gas is 1.80 g/L and has a pressure of 1.88 atm, and the molar mass…

Q: 1. A sample of gas weighs 3.10 g and occupies a volume of 1,272 mL at 30 °C and 720 mm Hg. What is…

A: According to ideal gas law, PV = nRT where P = pressure in atm  V = volume in L n = moles R = gas…

Q: A 1,000 L container holds 50 kg of argon gas at 27 °C. The molar mass of argon is M =40 kg/kmol.…

A: Given  Volume            = 1000 L  Mass of Argon = 50 kg               1 kg = 1000 gram     Then 50…

Q: A 0.593g sample of gas has a volume of 115 mL at 53.2 ∘C and 94.0 kPa. What is the molar mass of…

A: Use ideal gas equation:

Q: If a gaseous mixture is made of 2.93 g of He and 2.27 g of Ne and is in an evacuated 2.01 L…

A: The product of mole fraction with total pressure gives the partial pressure of a gas. Given volume…

Q: A vessel contains 2.5 L of H2 gas at 350 mm Hg and 25.0 °C. Calculate the pressure of the gas, in mm…

A:

Q: Calculate the density (in g/L) of Freon-12, CF2Cl2, at 32.2°C and 0.968 atm.

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

Q: An investigator is told that a closed vessel holds a pure rare gas. She measures the density of the…

A: The density of the gas, d = 0.8252 g/L Temperature of the gas, T = 298 K Pressure of the gas, P = 1…

Q: In alcohol fermentation, yeast converts glucose to ethanol and carbon dioxide: C6H12O6(s) →…

A:

Q: A spherical tank 3 m in diameter contains 54.55 kg of a mixture of CO2 and N2. If the total pressure…

A:

Q: 20. A gas mixture is made by placing 6.00 grams each of Ne and Ar in a 10.0 L rigid container at…

A: (a) The partial pressure of Ne Molar mass of Ne = 20.2 g/mol mass given of Ne= 6.00 g number of mol…

Q: (1) The molar mass of a gas (g/mol) that has a density of 0.42 g/L at 37 °C and 0.2 atm is: (A) 44.0…

A:

Q: A gas occupies 40.5 L at 70.0 ⁰C and 25.0 kPa. What volume will it occupy at STP (101.3 kPa, 273 K)?

A: Volume can be calculated from combined gas law: P1V1/T1 = P2V2/T2  P1 = 25.0 kPa V1 = 40.5L T1 =…

Q: 3. A 0.334 g sample of an unknown halogen gas occupies 109 mL at 398 K and 1.41 atm. What is the…

A: The ideal gas equation describes the relationship between different parameters of a gas. These…

Q: A 2.35 g2.35 g sample of an unknown gas at 29 ∘C29 ∘C and 1.05 atm1.05 atm is stored in a 2.25 L2.25…

A: According to ideal gas law PV = nRT where P = pressure = 1.05 atm (given) V = volume = 2.25 L…

Q: of 93.65g occupies 47.8L at 734mmHg and 32.7°C. What is A gas with a mass its molecular weight?

A: The combination of Boyle's law, Charles's law and Avogadro's law leads to an equation which shows…

Q: 5. At conditions of 104.7 kpa of pressure and 15°C temperature, a gas occupies a volume of | 45.5…

A:

Q: A newly discovered gas has a density of 2.39 g/L at 23.0°C and 715 mm Hg. What is the molar mass of…

A:

Q: A 0.179g sample of an unknown halogen occupies 109mL at 398K and 1.41 atm. What is the identity of…

A:

Q: What pressure does the gas exert if the temperature changes from T1 = 600. K to T1 = 300. K, while…

A: According to Gay-Lussac's law, at constant volume pressure increases, temperature increases.

Q: A syringe initially holds a sample of gas with a volume of 205 mL at 305 K and 1.88atm. To what…

A: Given, Initial volume = 205mL. Initial temperature = 305K. Initial pressure = 1.88atm. Final volume…

Q: In alcohol fermentation, yeast converts glucose to ethanol and carbon dioxide: C6H12O6(s) →…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: A gas occupies 17 L at a pressure of 102.3 kPa and 299 K. If the gas is cooled to 250 K and the…

A: given, initial volume = 17 L initial temperature = 299 K initial pressure = 102.3 kpa final pressure…

Q: Urea, NH2CONH2, is a nitrogen fertilizer that is manufactured from ammonia and carbon dioxide…

A: The balanced reaction taking place is given as, => 2 NH3 (g) + CO2 (g) -------> NH2CONH2 (aq)…

Q: The density of NO2 in a 4.50 L tank at 760.0 torr and 25.0 °C is g/L.

A:

Q: A sample of gas at 912.5 mmHg and 24.66 °C is heated to a temperature of 143.67 °C. What is the new…

A: Consider the given information is as follows; Initial pressure P1=912.5 mmHg =912.5 × 0.133322 kPa =…

Q: A gas occupies 28.5 L at 80.0 kPa and 25.0 ⁰C. What volume will it occupy at STP (101.3 kPa, 273 K)?

A: For the phase change of the ideal gas the temperature, pressure, and volume of the initial state and…

Q: A 2.50 g sample of an unknown gas occupies 875 mL at 685 mm Hg and 35 C. What is the molar mass of…

A: To calculate the molar mass of the unknown gas first of all we calculate the number of moles of the…

Q: The density of NO2 in a 4.50 L tank at 760.0 torr and 25.0 °C is g/L. A 1.88 1.68 3.27 1.64 9.30

A: Given, Volume = 4.50 L  Temperature = 25.0°C  Pressure = 760.0 torr

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

A: Given,The decomposition of hydrogen peroxide yields 75.3 mL of oxygen gas collected over water at…

Q: How many moles of CH4 gas would occupy 3.01 L at 101.3 kPa pressure and 30 C?

A: Given :-  Pressure of the gas = 101.3 kPa  Volume of the gas = 3.01 L  Temperature = 30 °C  To…

Q: A sample of Ne gas occupies 0. 220L at 0.86 atm. What will be its volume at 29.4kPa?

A: This problem can be solved by using Boyle's law. It states that the pressure of a gas is inversely…

Q: A 320. mL sample of a dry gas is collected at 47°C and 740 mm Hg. What is its volume at 7°C and…

A:

Q: at what temerature does H2O have a density of 0.812 g/L at 1.17 atm

A: The ideal gas equation is given below. PV = nRT PV = (m / M) RT (PM) / (RT) = m / v (PM) / (RT) =…

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

A: At STP, 22400 cm3 is the molar volume of a gas. it is given that  250 cm3 of gas weighs = 0.291 g…

Q: 1A10 Balloens are still used to deploy sensoes that menitor metecrological phenomena and the…

A:

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.