How many moles of He(g) are in a 5.00 L tank at 30.0 °C and 650 Torr? moles 1 4 6 C 2.

Q: Consider the following equation: NH 4NO 3 (s) --> N 2O (g) + 2H 2O (g) 100.0 g ammonium nitrate is…

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Q: What is the partial pressure of krypton in the mixture if the total pressure is 816 mmHgmmHg ?…

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Q: Consider the chemical reaction: 2 H2O(l) --------> 2 H2(g) + O2(g) What mass of H2O is required…

A: The moles of O2 can be determined by using the ideal gas equation as:  PV=nRT…

Q: At 0 degrees C, a 1.0-L flask contains 5.0×10−2 mol N2, 1.5×102 mg O2, and 5.0×1021 molecules of…

A: Given, volume of flask V =1.0 Ltemperature T =0°C =273.15 Knumber of moles of N2 =5.0×10-2 mol =0.05…

Q: At 0°C a 1.0-L flask contains 2.0*10^-2 mole of N2, 2.0*10^2 mg and 4.6*10^21 molecules of NH3. What…

A: Let us consider that the flask contains 2x10-2 N2 moles, 2x102 mg of O2 and 4.6x1021 NH3 molecules.…

Q: How many molecules of CO2 are contained in a 5.00 L tank at 7.53 atm and 485 K?

A: The question is related to the ideal gas equation. The formula for the ideal gas equation is as…

Q: A sample of magnesium metal reacts completely with an excess of hydrocholoric acid: Mg(s) + 2…

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Q: 10.546 g of a sample containing a mixture of NaHCO3 and Ca(HCO3)2 is mixed with an excess of HCI to…

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Q: A mixture of helium and methane gases, in a 5.78 L flask at 66 °C, contains 0.900 grams of helium…

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

Q: What is the partial pressure of krypton in the mixture if the total pressure is 718 mmHg ?A gas…

A: Partial pressure of compound A can be determined as follows:Where, PA0 is the partial pressure at…

Q: How many moles of CO2 are contained in 7.62 L at 38 °C and 711 torr?

A: Given -                         Volume of sample (V) = 7.62L…

Q: How many grams of CO2 are contained in a 10.0 L tank at 7.53 atm and 485 K?

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Q: flask contains a mixture of N2 and H2 at a total pressure of 5.20 atm. If there are 1.00 mol of H2…

A: Given: Total pressure = 5.20 atm No.of mole of H2 = 1 mol No.of mole of N2 = 8 mol Calculate:…

Q: What mass in kilograms of CO2 is needed to fill an 80.0 L tank to a pressure of 150.0 atm at 27.0 °C

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Q: The mole fraction of CH4 in a mixture of gases is 0.285 with a partial pressure of 0.498 atm. What…

A: The total pressure of a mixture of gases not reacting with each other is equal to the sum of partial…

Q: A large flask with a volume of 936 mL is evacuated and found to have a mass of 134.66 g. It is then…

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Q: C3H4(g) + 4 O2(g) → 3 CO2(g) + 2 H2O(g) If 15.0 grams of C3H4(g) are placed in a 5.00L container at…

A: Given, Mass of C3H4 = 15.0g. Volume of container = 5.00L. Temperature = 350K. Partial pressure of…

Q: A 0.0125-g sample of a gas with an empirical formula of CHF2 is placed in a 165-mL flask. It has a…

A: The molecular formula of the compound has to be determined.

Q: A mixture of cyclopropane gas (C3H6) and Oxygen (O2) in a 1.00 to 4.00 mole ratio is used as an…

A: Given that the mole ratio of cyclopropane and oxygen in the mixture is 1:4 respectively. The partial…

Q: Calculate the mass of 6.2 L of CO2 at 300° K and a pressure of 758.0 mm Hg.

A: CO2 gas Volume = V = 6.2 L Temperature = T = 300 K Pressure = P = 758.0 mm Hg ( 1 atm = 760 mm Hg )…

Q: moles

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Q: A sample of nitrogen gas has a volume of 167.0 mL at STP. What volume (in mL) does the gas occupy if…

A: 1) Given that: Volume of nitrogen (V1) = 167.0 mL = 0.167 L at STP that is Temperature (T1) = 273 K…

Q: A mixture of solid calcium oxide,  CaO,   and solid barium oxide,  BaO,   weighing  3.145 g   is…

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Q: A 3.19-g mixture of solid CaO and solid ZnO is reacted in a 2.00-L container with CO2(g) at a…

A: The chemical reactions taking place are: CaO(s)+CO2(g)→CaCO3  (s)-----1ZnO(s)+CO2(g)→ZnCO3(s)…

Q: A 10.0 L vessel at 298 K contains O2(g) at a pressure of 740. mmHg. What mass of He(g) would be…

A: In this question, we want to determine the mass of He(g) gas is added into 10.0L vessel so that it's…

Q: How many grams of O2 are contained in a 15.0 L sample at 2.20 atm and 25.0°C?

A: Given, volume of O2 gas =15.0 Lpressure =2.20 atmtemperature =25.0 °Cwe are asked to calculate,…

Q: f you place 3.00 mol of N2 and 4.00 mol of O2 in a 35.0 L container at 25.0 °C, what will the…

A: From given data  T = 25 °C = 273 + 25 = 298 K V = 35 L  n1=3 n2= 4 Also, gas constant, R = 0.0821…

Q: N20 is a gas commonly used to help sedate patients in medicine and dentistry due to its mild…

A: Use ideal gas equation: PV=nRTwhere,P=pressureiof the gas in atm.V=volume of the gas in L.n=number…

Q: 0.17 moles of hydrogen gas and 0.33 moles of nitrogen gas are created from the reaction 2NH3 (g) →…

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Q: A gas mixture consists of equal masses of methane (molecular weight 16.0) and argon (atomic weight…

A: The mole fraction of argon and methane are calculated as,

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: 10. A 3.00-g sample of a mixture of K½O and BaO is placed in 600.0 cm³ vessel containing SO3 gas at…

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Q: A gas mixture was prepared to contain 50% by mass of O₂ and He. When the total pressure of the…

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Q: A sample of magnesium metal reacts completely with an excess of hydrocholoric acid: Mg(s) + 2…

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Q: A sample of hydrogen gas is confined in a 9.87 liter container at 9810. torr and 27 °C. How many…

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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.