Acetylene is prepared from the following reaction CaC2 + 2H2O -> CHCH + Ca(OH)2   10.0 grams of calcium carbide was reacted with excess water to form acetylene.  Assuming a 67% yield, how many mL of acetylene could be collected at 25oC, 1atm?

Q: what is the mole fraction of Ne in a mixture containing 10.1 g of Ne, 79.9g of Ar and 83.8 g of Kr

A: Number of moles of a substance is equal to the mass of the substance divided by its molar mass.

Q: What volume of oxygen gas at STP is required to react with 10 g of potassium metal according to the…

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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 1.00…

A: Moles of N2 = 0.250 mole CH4 = 0.150 mole O2 =0.100 mole

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Q: Convert 5.55 liters of xenon tetrafluoride, XeF4 at STP (Standard Temperature Pressure) into moles.

A: Answer :- 0.248 mol XeF4  At STP, 5.55 L XeF4 = 0.248 mol XeF4…

Q: What volume of gaseous water, H2O, has the same moles of gas as 10.0 L of xenon gas at the same…

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Q: How many moles of carbon dioxide are in a 4,704 mL container at 489.2 kPa and 25°C?

A: Given data contains, Volume of container is 4704 mL=4.704 L Pressure is 489.2 kPa=4.8280 atm…

Q: The compound is oxidized and the chlorine in the substance is converted to chlorine gas. if 40 mg of…

A: Given :  Volume = 12 m3  Pressure = 1 atm  Temperature = 25°C = 298 K  Final pressure = 1 atm  Final…

Q: The following reaction is used to prepare oxygen gas: 2 H2O2(aq) → 2 H2O(l) + O2(g) If you start…

A: Concept:  Molarity = no of mole/ volume in liter  M = mole/V  So  No of mole = MV  From Idea gass…

Q: Aqueous sulfurous acid (H2SO3) was made by dissolving 0.200 L of sulfur dioxide gas at19°C and 745…

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Q: What volume of gas will be produced when 38 mL of 0.40M NH4NO3 reacts with an excess of aqueous…

A: The reaction is as follows: NH4NO3+NaOH→NaNO3+NH3+H2O The gas produced in the reaction is NH3 The…

Q: What is the volume of a sample of ethane at 467 K and 1.1 atm if it occupies 405 mL at 298 K and 1.1…

A: Given, V1 = 405 mL V2 = ? T1 = 298 K T2 = 467 K The given pressure is considered as constant since…

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: 5. Which of the following statements is FALSE according to the gas laws? a. Vc 1/P at constant…

A: Answer:- The first question is answered by using the simple concept of gaseous laws which involves…

Q: A canister of oxygen gas is compressed from 68.0 mL at standard pressure to 19.0 mL. What is the new…

A: apply Boyel law for the given question  Boyel law is ,at constant temperature , PV = constant  or…

Q: Acetylene gas can be produced by slowly reacting Calcium carbide with water. CaC2 (s) + 2H2O (l) (…

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Q: 3H C3H1002 2H 4H 5 1 PPM

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Q: What volume would 27 grams of CO2 occupy at 19 degrees celsius, 534 mm Hg pressure?

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: What is the volume of 4.68 g of CO2 gas at 1.5atm and 35°C?

A: Given data, Pressure (P) = 1.5 atm   Temperature (T) = 35°C…

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: Rank the following gases from least dense to most dense at 1.00 atm and 298 K: SO2, HBr, CO2.…

A: Given,SO2,HBr,CO2At 1.00 atm and 298 K

Q: Using the procedure in Experiment 8, acetonitrile (molar mass = 41.05 g/mol) is collected at a…

A: Answer:- This question is answered by using the simple concept of calculation of volume of a gas…

Q: What pressure of gas is produced from the reaction of 78.3 g of Zn with 125 mL of 12 M HCI in a 2.6…

A: The reaction is ;  2HCl(aq) + Zn (s) ---> ZnCl2(aq) + H2(g) 78.3 g zinc react with 125 mL 12M…

Q: Acetylene gas can be produced by slowly reacting calcium carbide with water. CaC2(s) + 2H2O(l) ➡…

A: The given data- mass of calcium carbide = 35.0 g The pressure of the gas = 1 atm The temperature of…

Q: Using the ideal gas law, what is the volume in L of 3.59 g CO2 of gas at 2.09 atm and 291 K?

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Q: 4. How many grams of carbon dioxide gas do you have if the gas is exerting a pressure of 2.1atm at…

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Q: The weight of 151 ml of a certain vapor at 68.0 ºC and 768 mm is 1.384 grams.  What is the molecular…

A: Concept used: An ideal gas also called a perfect gas in which molecules are point particles, i.e.,…

Q: A 3.85 g sample of a KCl−KClO3 mixture is decomposed by heating and produces 117 mL O2(g), measured…

A: Given, V = 117 mL = 0.117 L as 1 mL = 0.001 L T = 23.5 + 273 = 296.5 K P = 110 kPa The value of R is…

Q: 3.19K HI B. What mass of aluminum metal must be dissolved in excess hydroiodic acid to pro L of…

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Q: Using Ideal Gas Law formula: PV=nRT,  at what temperature would 3.67 mole P2O3 gas occupy 67.5L if…

A: Given data,Moles of P2O3=3.67molesVolume=67.5LPressure=115kPa

Q: A 0.338-g sample of gas occupies 125 mL at 60. cm of Hg and 25°C. What is the molar mass of the gas?

A: It is given that the mass of the sample is 0.338 g and occupies 125 mL at a pressure of 60 cm Hg at…

Q: If the atmosphere is 25 degC and 1.2 atm and contains 0.79 mole fractions of N2, 10-S mole fractions…

A: Given that : Pressure of the atmosphere = 1.2 atm Mole fraction of N2 = 0.79 Mole fraction of the…

Q: A compound is found to be 30.45% N and 69.55% O by mass. If 1.63 g of this compound occupy 389mL at…

A: Given : Mass percent of N = 30.45 % Mass percent of O = 69.55 %  Since the compound is made up of N…

Q: Use the standard molar volume of a gas at STP (1mol/22.4L) to find how many moles of methane (CH4)…

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Q: 1. Hydrogen peroxide, H2O2, is used by some water treatment systems to remove the disagreeable odor…

A: Mole fraction is the ratio of the number of moles of solute of interest to the total moles present…

Q: A mixture composed of 60%CO2 and 40%He by volume analysis is contained at 0.5MPa. What is the…

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Q: 0.361 g of an unknown liquid occupied a volume of 250.0 mL at 758 mm Hg pressure and 100 °C. What is…

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Q: How many liters of CO2 measured at 26°C and 767 torr are produced in the combustion of 125 mL of…

A: The combustion reaction of propanol is given as: C3H7OH (g) + 92 O2 (g) → 3 CO2 (g) + 4 H2O (g) ⇒3…

Q: a gas mixture with a concentration 320 micrograms of chlorine gas per cubic meter at 30 degree…

A: The solution which contains a solute in particular quantity of solvent is known as concentration.

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: an aerosol can has a volume of 450 mL and contains 2.18g of propane (C3H8) as a propellant. if the…

A: We need to determine the pressure in the can.  1- First we need to determine the moles of propane.…

Q: Alka-Seltzer® contains the base sodium hydrogen carbonate, NaHCO3, which reacts with hydrochloric…

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Q: Calculate the height of a column of liquid glycerol (d= 1.26 g/em³), in meters, required to exert…

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Q: Vessel A (volume 16.6 L) contains 30 g of hydrocarbon, and its pressure at 300 K is 1 atm.What is…

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Q: Concentrated hydrogen peroxide solutions are explosively decomposed by traces of transition metal…

A: Given: Temperature = 298K Pressure =744torr

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.