A 3.30g sample of a white solid was vaporized in a 400.0 mL vessel. If the vapor has a pressure of 995 mmHg at 155°C, what is the molecular weight of the solid?

Q: If 45.5 g  of O2 and 2.1 g  of CO2 are placed in a 11.1 L  container at 34 oC , what is the pressure…

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Q: P1A.8 A vessel of volume 22.4 dm' contains 2.0 mol H,(g) and 1.0 mol N,(g) at 273.15 K initially.…

A: Partial pressure:  It is the individual pressure of a gas when a mixture of gases is present in a…

Q: If 42.0 g  of O2 and 6.6 g  of CO2 are placed in a 5.6 L  container at 20 oC , what is the pressure…

A: Dalton's law: Dalton's law of partial pressures states that in a mixture of non-reacting gases, the…

Q: What volume is occupied by 0.986 mol of CO2 at 318.5 K and 973 mmHg?

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Q: Under constant-pressure conditions a sample of hydrogen gas initially at 88oC and    9.6 L is cooled…

A: Given values are, Initial temperature =T1=88°C = 88+273.15 K = 361.15 K Initial volume V1= 9.6 L…

Q: What is the pressure of 1.25g of He in a 25 L tank at 25oC?

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Q: What is the volume occupied by 1.24 mol of a gas at 35oC if the pressure is 96.2 kPa? What is the…

A: This is given by equation of state for ideal gas i.e.  PV = nRT On combining all the gas laws a…

Q: A mixture containing 0.250 mol N2 (g), 0.150 mol CH4 (g), and 0.100 mol O2 (g) is confined in a 1.00…

A: Given: moles of N2 = 0.250 mol moles of CH4 = 0.150 mol moles of O2 = 0.100 mol Temperature = 35 oC…

Q: Explain how you would find the pressure of the gases in a 1 L container produced by the combustion…

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Q: A sample of phosphorus that weighs 3.243 × 10−2 g exerts a pressure of 31.89 kPa in a 56.0-mL bulb…

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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: What is the density of a gas with a molar mass of 163 g/mol at 25C and 1.00 atm?

A: Given information: Molar mass = 163 g/mol Temperature (T) = 25 °C Pressure (P) = 1.00 atm

Q: A sealed flask with an internal volume of 2.0 dm3 contains 6.0 g of methane. If the pressure inside…

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Q: A mixture containing 0.250 mol N2 (g), 0.150 mol CH4 (g), and 0.100 mol O2 (g) is confined  in a…

A: Recall ideal gas law-                    PV=nRTWhere,pressure of gas is P         Volume of…

Q: 5. When 40.0 liters of oxygen gas at 20.0 °C is compressed to 3.00 liters, what must the new…

A: COMPRESSION OF GAS: Gases can be compressed in order to enhance the pressure of the gas. When gases…

Q: A gaseous mixture of N2 and O2 has a total pressure of 3.000 bar . If the partial pressure of N2 is…

A: Dalton's law of partial pressure:-              It states that the total pressure exerted by the…

Q: What would be the density of a sample of CO2 gas at 70.0 degrees celcius and 2.50 atm of pressure?

A: The expression of density can be derived from ideal gas equation. PV = n R T PV = (m / M) RT d =…

Q: What is the pressure of a 4 g sample of nitrogen gas at 25 degress C in a closed 200mL container?

A: Given values, Mass of nitrogen= 4g Temperature=25°C = 298.15K Volume = 200mL= 0.2L Pressure=? Gas…

Q: If there is 25.0g of CO2 gas in a 10.0 mL cylinder at 5 degree celsius, what is the gas pressure…

A: If there is 25.0g of CO2 gas in a 10.0 mL cylinder at 5 degree Celsius, the gas pressure within the…

Q: What volume is occupied by 0.756 mol of CO2 at 250.2 K and 769 mmHg? V =

A: The combined relation between gas laws is known as the ideal gas law or the gas equation. The…

Q: .What is the temperature of gas, in K, that is expanded from 2.5 L at 25 C to 4.0 L at constant…

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Q: A gaseous mixture containing 7 moles of nitrogen, 2.5 moles of oxygen and 0.50 mole of helium exerts…

A: Concept: Partial Pressure: it can be define as if a container filled with more than one gas, each…

Q: 25.0 g of H2O vapor occupies a volume of 750 mL at 35oC, what is the pressure?

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Q: Liquified petroleum gas (LPG) is propane stored under sufficient pressure to liquify it. When a tank…

A: The effect of pressure and temperature is measured by Boyle’s law and Charles's law respectively.…

Q: Boron forms a variety of unusual compounds with hydrogen. A chemist isolated 6.3 mg of one of the…

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Q: What is the volume, in liters, of 4.00  moles of methane gas, CH4, at 18 Celsius and 1.40atm

A: Given, Number of moles of  methane (CH4) gas =4.00 molpressure of gas =1.40 atmtemperature of gas…

Q: If a cylinder contains 10.0 g of CO 2 in 10.0 L at 325 K, what is the pressure?

A: Given, a cylinder contains 10.0 g of CO 2 in 10.0 L at 325 K

Q: The volume of a sample of propane gas at 3.1atm is 14.5L. If the pressure is increased to 6.8atm,…

A: We use Boyle's law for calculating volume at a constant temperature. Boyle's law says that at a…

Q: When 40.0 litres of oxygen gas at 20.0 (degrees Celsius) is compressed to 3.00 litres, what must the…

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Q: what pressure is exerted by 870.2g of CH4 in a 0.630L steel container at 240.8K?

A: According to ideal gas law  PV = nRT  where P = pressure in atm  V = volume in L = 0.63 L (given) n…

Q: At what temperature does 1.00 atm of carbon dioxide (CO2) gas have the same density as 2.00 atm of…

A: Given: For CO2                PCO2 = 1.0 atm Mass m = 44 g/mol Temperature = ? For He PHe = 2.0 atm…

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: To prevent a condition called the “bends,” deep-sea divers breathe a mixture containing, in mole…

A: Assuming we have total 100 moles  => moles of oxygen = 10 % of 100 = 10 moles moles of nitrogen =…

Q: A 0.33 g sample of organic acid is vaporized in a sealed 300.0 mL container at 150oC and the…

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Q: The compound 1-iodododecane is a nonvolatile liquid with a density of 1.20g/mL. The density of…

A: This question is solved by using the simple concept of formula of pressure in terms of height and…

Q: 1. What will be the pressure of a sample of 48.0 g of oxygen gas in a glass container of volume 5.2…

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Q: A gas mixture has partial pressures of 90. mm Hg O2, 150 mmHg Ar, and 325 mmHg CO2. What is the mole…

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Q: What pressure permits 25.0 cm3 of neon at 735 mmHg to expand to a volume of 40.0 cm3?

A: The initial volume of neon, V1=25.0 cm3 The initial pressure of neon, P1=735 mmHg The final volume…

Q: What is the pressure of 1.27 grams of chlorine gas in a 40.0 ml container at 31.4 °C?

A: The given data is as follows:           The mass of chlorine gas = 1.27 grams The volume of the…

Q: Consider the following reaction: 2 ����(�) + ��2 (�) → ��2��3 (�) + �2�(�) What volume of CO2 (g) at…

A: Chemical reaction : 2 LiOH + CO2 ---> Li2CO3 + H2O  Mass of LiOH = 1.00 g  Volume of CO2 = ?

Q: A mixture of 5.00 mol of N2, 10.0 mol of O2 and 15.0 moles of Cl2 are mixed in a tank at 25 deg…

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Q: A mixture of N2, O2, and CO2 has a total pressure of 740 torr. In this mixture, the partial pressure…

A: According to Dalton's law, the total pressure of any gaseous mixture is given by the sum of partial…

Q: If 43.6 g of O2 and 3.6 g of CO2 are placed in a 11.0 L container at 21 oC , what is the pressure…

A: We can use ideal gas equation to calculate the partial pressure of each gas. The ideal gas equation…

Q: The gas from a certain volcano had the following composition in mole percent: 65% CO2, 25% H2, 5.4%…

A: According to Dalton's law of partial pressure the total pressure of a gaseous mixture is the sum…

Q: What pressure is exerted by 129.5g of CH4 in a 0.3900 L steel container at 215.7k?

A: If a gas behaves like an ideal gas, it will follow the ideal gas equation. It gives the relationship…

Q: Calculate the root-mean-square (rms) speed (in m/s) of propane (C3H8) gas molecules at a temperature…

A: We have to calculate the root-mean-square (rms) speed (in m/s) of propane (C3H8) gas molecules

Q: The pressure 25.0 meters under water is 347 kPa. what is this pressure in mmHg?

A: Given that: Pressure = 347kPa We know that: 1atm = 760mmhg

Q: 4. What volume would be occupied by a gas that has a pressure of 0.950atm if its volume was 1.50L at…

A: Given: Case I:Volume of gas, V1= 1.50LPressure of gas,P1=1.16 atmCase II:Volume of gas, V2=…

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.