Calculate the number of moles of carbon dioxide gas present in a 1.50 L flask at STP.   A sample of carbon monoxide initially at 93.0 °C was heated to 186 °C. If the volume of the carbon monoxide sample is 979.7 mL at 186 °C , what was its volume at 93.0 °C?     What pressure is exerted by 984.0 g of CH4 in a 0.680 L steel container at 140.0 K?     Calculate the volume, in liters, occupied by 0.219 mol of oxygen gas at STP.

Q: 1. Calculate the pressure of 320 grams of nitrogen gas, N2, at 250°C in a 15 L container.

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Q: What is the density of a sample of argon gas at 55 °C and 765 mmHg?a) 2.99 g/Lb) 1.13 * 103 g/Lc)…

A: Relation between molar mass and density- Ideal gas equation is, PV= nRT Where, P=pressure, V=Volume,…

Q: A 270-mL flask contains pure helium at a pressure of 756 torr . A second flask with a volume of 465…

A: We need to calculate: A) the partial pressures of helium after mixing, B) the partial pressure of…

Q: A certain gas has a molar mass of 45.88 g/mol. What will be its density at STP? O 2.86 g/L O 2.24…

A: • The values provided in the question are:-  i) Molar mass of a certain gas, M = 45.88 g/mol…

Q: How many moles of gaseous arsine (AsH3) occupy 0.0400 L at STP? What is the density of gaseous…

A: STP: STP stands for standard temperature and pressure which is used to calculate properties of gases…

Q: How many liters of hydrogen are present in 3 moles of this gas at STP? a) 6.02 x 10^23 b) 22.4 c)…

A: Given  Number of mole of H2  = 3 mole  Volume of Hydrogen gas at STP =   ?

Q: A sample of hydrogen has a volume of 1.40 L at STP. What pressure would the sample have if the…

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Q: What is the mass, in grams, of 13.88 L of nitrogen gas (N2: 28.00 g/mol) at STP?

A: Introduction: The gases which follows Charle’s law, Boyle's law, Gay-Lussac’s law, and Avogadro’s…

Q: A 285-mL flask contains pure helium at a pressure of 743 torr A second flask with a volume of 470 mL…

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Q: A sample of argon has a volume of 1.2L at STP. If the temperature is increased to 25C and the…

A: The gaseous state is the state of matter with least intermolecular force of attraction between…

Q: In the fermentation of glucose (wine making), 760 ml of CO2 gas was produced at 65O mmHg. What is…

A: At STP  Pressure= 760 mmHg and Expression used for calculation is P1V1= P2V2

Q: 1.10 g of Carbon dioxide were introduced into a 1.00 L flask which contained some pure oxygen (O2)…

A: Given : mass of CO2 introduced = 1.10 g Since molar mass of CO2 = 44 g/mol Hence moles of CO2…

Q: If 6.90 L of gaseous ethanol reacts with 17.2 L O2, what is the maximum volume of gaseous carbon…

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Q: When fully inflated, a hot-air balloon has a volume of 1.6 X 105 L at an average temperature of 375…

A: Given that volume of hot-air balloon, y =1.6×105 L Pressure, P = 0.975 atm Temperature, T = 375 K…

Q: Calculate the number of grams of oxygen gas represented by a sample of a pure gas at 27oC, 715 mmHg,…

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Q: In a mixture of helium, oxygen, and methane in a 2.00 L container, the partial pressures of helium…

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Q: How many miles of ozone occupy a volume of 3.36 L at STP?

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Q: Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of…

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Q: The hydrogen gas from the reaction of 2.200 g of iron with an excess of acid is collected in a 10.00…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: pressure

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Q: 1atm = 101.325kPa = 14.7psi = 760mmHg = 160 torr = 29.92 in HgA   chemist collects 59.0mL of SO 2…

A: According to Boyl's law, at a constant temperature, the pressure (P) is inversely proportional to…

Q: A new greenhouse gas has been discovered. Answer the following questions to characterize this new…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: A sample of hydrogen gas occupies a volume of 22.0 mL at STP. What will be the new pressure (in…

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

Q: 1.If you are asked to calculate the volume of Carbon dioxide gas at 25oC and 802 torr that could be…

A: We have given the Carbon dioxide gas Temperature =T= 25°C  Pressure = P=  802 torr  V = volume of…

Q: How much potassium chlorate is needed to produce 20.0 mLmL  of oxygen gas at 700. mmHgmmHg   and…

A: Mole of the gas is  n = PV/RT

Q: 2 Na(s) + 2 H20 (1) → 2 NaOH (aq) + H2 (g) Calculate the mass of sodium required to produce 456 mL…

A: Given : We have to calculate the mass of Na.

Q: What volume of hydrogen at 27 °C and 723 torr may be prepared by the reaction of 8.88 g of gallium…

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Q: A balloon originally had a volume of 0.439 L at 44 Celcius and a pressure of 729 torr. To what…

A: Given: Initial volume V1=0.439 LFinal volume V2=378 mL                             =378 mL×10-3 LmL…

Q: You fill a balloon with helium gas to a volume of 3.68 L at 23°C and 789 mmHg. What would the volume…

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Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: In Habers process for the synthesis of ammonia, 3 moles of H2 gas is consumed per mole N2 gas and…

Q: A sample of 263.0 mL of wet nitrogen gas was collected over water at a total pressure of 756 torr…

A: Introduction :  Molarity is defined as the number of moles of solute dissolved in one litre of the…

Q: Dinitrogen monoxide can be prepared by heating ammonium nitrate, which decomposes into dinitrogen…

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Q: What is the mass of a piece of magnesium wire that produces 48.7 mL of hydrogen gas collected over…

A: Reaction:  Mg(s) + 2H+(aq) ---> 2Mg (aq) + H2 (g) 1 mol of H2 gas is produced by 1 mol of Mg…

Q: At what temperature will 5.00 g of Cl2 exert a pressure of 900. torr at a volume of 750.mL?

A: Ideal gas equation is  PV = nRT  PV = (w/M)RT Here , P = pressure  V = volume  w = mass of the gas M…

Q: If 500, mL of hydrogen gas has a pressure of 456 torr at 23 C, what would be the volume at STP? OA.…

A: The ideal gas equation is given by,                                                        Where,…

Q: What is the mass of a sample of chlorine gas that occupies a volume of 2.500 L at STP? 1) 1.295 g O…

A: One mole of any gas under STP conditions will occupy a volume of 22.4 L For example : 1 mole of…

Q: A sample container of carbon monoxide occupies a volume of 422 mL at a pressure of 785 torr and a…

A: Write down the mathematical  expression for ideal gas law. PV=nRT Where P is the pressure of the…

Q: How many moles of N2 is needed to fill a small room that has a volume of 960 cubic feet and a…

A: Given,Pressure, P = 745 mmHg     Volume, V = 960 ft3Temperature, T = 25 °C = (25 + 273) K = 298…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: At STP the volume of one mole of gas is 22.4 L. Then, at STP, 22.4L of N2 contains 1 mole of N2 .…

Q: What is the new volume (in L) of an 34.7 L sample of carbon monoxide, CO, if the pressure changed…

A: In accordance with Boyle's law, the pressure of the gas varies inversely with the volume of the gas,…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: Given, Volume of N2 at STP = 1580 LVolume of H2 at STP = 4240 LWe know that, at STP 1 mole of a gas…

Q: A student adds 3.00 g of dry ice (solid CO2) to an empty balloon. What will be the volume of the…

A: Given : Mass of dry ice i.e CO2 = 3.00 g And the condition is STP i.e standard temperature of 273 K…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: N₂ (g) + 3 H₂ (g) → 2 NH₃ (g)  According to the above reaction 1 mole of Nitrogen will react with 3…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

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Q: 1atm = 101.325kPa = 14.7psi = 760mmHg = 160 torr = 29.92 in Hg   A sample of neon gas occupies a…

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Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: We have to calculate the volume of Reactant left.

Q: A substance containing only carbon and hydrogen is analyzed and found to contain 85.7% carbon by…

A: Density of compound at STP = 1.87 g/Li.e. 1 L of compound weighs 1.87 g1 mol of compound at STP =…

Q: In an experiment, 175 mL of nitrogen gas was collected over water at 23.5 oC and 757 mmHg. What mass…

A: Given,175 mL of nitrogen gas was collected over water at 23.5oC and 757 mmHg.The vapour pressure of…

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.