140.1 g of a noble gas occupies 40.75 L at 758 mm Hg and 23.0°C. What is its molecular weight? which noble gas is it?

Q: What is the density of a sample of argon gas at 55°C and 765mmHg?a) 2.99 g/L b) 1.13 * 103g/Lc) 1.49…

A: The given problem can be solved by using the formula as:  dRT=PM…

Q: When aluminum reacts with concentrated hydrochloric acid, hydrogen gas is produced.…

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Q: At what temperature(°C) will 7.82moles of methane gas occupy a volume of 5.47 L ata pressure of…

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced.…

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Q: What mass of O2 is required to react with H2 to produce 4.19 L of H2O(g) at 172°C and 0.801 atm?

A: Given : Volume of H2O gas produced = 4.19 L  Temperature = 172 °C And pressure = 0.801 atm

Q: Consider the following unbalanced equation: C2H5OH(g) + O2(g) → CO2(g) + H2O(l) 1.55 g of ethanol…

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Q: A gaseous compound has a density of 1.12 g/L at 23.3 °C and 1.11 atm. What is the molar mass of the…

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Q: Neon gas, Ne, at 25°C and 1.00 atm occupied a vessel whose volume was 2.67 L. What volume would this…

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Q: If 26.0 g of Ar(g) occupies a volume of 4.95 L, what volume will 1.09 moles of Ne(g) occupy at the…

A: The molar mass of Ar = 40g/mol  The ideal gas equation states that: PV1 = nRT   .......... 1 Given:-…

Q: At 530.4mmHg and 55.3o C, a 3.14-L sample of a hydrocarbon gas has a mass of2.28g.What is the…

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Q: A Gaseous compound is 30.4% N and 69.8% O. A 5.25 g sample of the gas oppucpies a volume of 1.00L…

A: Molecular formula of a compound depicts the actual molar ratio of elements present in it. Simplified…

Q: If a 1.79-g sample of a gas occupies 1.0 L at STP, what is the molar mass of the gas at 125 C? 40.1…

A: Given data: The weight of the sample is 1.79 g. Temperature =(273+125)=398 K. Volume=1 L Pressure=1…

Q: In alcohol fermentation, yeast converts glucose to ethanol and carbon dioxide: СоН12059) — 2СH,ОН) +…

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

Q: 2Ag2O(s)》4Ag(s)+ O2(g) In this reaction, what mass of Ag2O(s)(in grams) is required to form 388 mL…

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

Q: For the following reaction, 0.76 moles of A(g) are reacted with 1.25 x 1024 molecules of B(g).…

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Q: What mass of propane (C3H8) will fit in a 10L cylinder at STP?

A: Relation between moles and volume: At standard temperature and pressure (STP), the relation between…

Q: The density of a noble gas is 2.71 g L at 3.00 atm and 0 °C. What is the gas? Xe Не Ne O Kr O Ar

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Q: A 0.790 g sample of an unknown substance was vaporized in a 250. mL flask at 77.1 °C and 1.03 atm.…

A: Since the sample is finally in gaseous form. Hence the ideal gas law is applicable. According to…

Q: A gaseous compound has a density of 1.69 g/L at 25.2 °C and 1.45 atm. What is the molar mass of the…

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Q: A gas composed of chlorine and oxygen has a density of 2.875 g/L at 751.5 mm Hg and 11°C. What is…

A: The relationship between density , pressure , temperature and molar mass of the gas is given by the…

Q: A sample of 140.1 g of a noble gas occupies 40.75 L at 758 mm Hg and 23.0 °C. What is its molar mass

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Q: CH3OH can be synthesized by the following reaction.CO(g)+2H2(g)→CH3OH(g) What volume of H2 gas (in…

A: According to the question, methanol is prepared by the given reaction.From this reaction, 2 moles of…

Q: 9. What is the mass of the solid NH4Cl formed when 73.0 g of NH3(g) are mixed with an equal mass of…

A: Observing the given reaction shows that 1mole of NH3 reacts with 1 mole of HCl and forms 1 mole of…

Q: Hydrazine, N2H4, reacts with oxygen to form nitrogen gas and water. N2H4(aq)+O2(g)⟶N2(g)+2H2O(l) If…

A: The given balanced equation is as follows. N2H4(aq)+O2(g)⟶N2(g)+2H2O(l) Given that we have oxygen in…

Q: Oxygen gas can be prepared by heating potassium chlorate according to the following equation…

A: The number of moles of oxygen is calculated as,

Q: When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced.…

A: Given, aluminium reacts with concentrated hydrochloric acid to producehydrogen gas according to the…

Q: A gas composed of chlorine and oxygen has a density of 2.875 g/L at 752.0 mm Hg and 11°C. What is…

A: Interpretation- To determine the molecular formula of the gas when  gas composed chlorine and oxygen…

Q: At 25°C and 449 mmHg, an unknown pure gas has a density of 0.676 g/L. Which of the following gases…

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Q: Consider the reaction: Li2O(aq) + CO2(g) Lİ2CO3(s) ----> What volume of cabon dioxide will react…

A: Given :-  Li2O(aq) + CO2(g)  ---> Li2CO3(s)   Mass of Li2O = 1.00 g  Molar mass of Li2O = 29.88…

Q: A helium balloon is filled to a volume of 2.88 x 103 L at 722 mm Hg and 19°C. When the balloon is…

A: In this question, we want to determine the volume of Hellium balloon at -55°C and 339mmHg  You can…

Q: . 0.831 g of Neon gas was collected in a 200. cm flask at 75.0 °C and 1.00 atm. What is the molar…

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Q: What is the molecular weight of the gas if 15 g of the gas occupies volume of 8.2 L at 57°C and 1.1…

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Q: If 37.5 mol of an ideal gas occupies 92.5 L at 43.00 ∘C, what is the pressure of the gas?

A: Ideal gas equation: PV = nRT Where, P = pressure in atm; V = Volume in L               n = number of…

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: gaseous compound has a density of 1.78 g/L at 24.3 °C and 1.56 atm. What is the molar mass of the…

A: Given , density = 1.78 g/L Temperature = 24.3 °C = 24.3 + 273 = 297.3 K  Pressure = 1.56 atm  Molar…

Q: A 280ml container of chlorine gas kept at 25C and 746 torr is exposed to 1.25g white phosphorus (P4)…

A: Limiting reagent Limiting reagent is the reactant which is completely consumed during the reaction…

Q: A gaseous compound has a density of 1.67 g/L at 22.1 °C and 1.42 atm. What is the molar mass of the…

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Q: Hydrogen gas is collected at 40oC during the following reaction:   Al          +            HCl…

A: From given datas Initially we are calculating number of moles from the balanced equation and then…

Q: A 0.271-g sample of an unknown vapor occupies 294 mL at 140°C and 847 mmHg. The empirical formula of…

A: A gas with empirical formula CH2 that occupies 294 mL at 140°C and 847 mmHg.

Q: At what temperature will 60.0 g fluorine gas take up 4.80 L of space at 6.45 atm pressure?

A: Given: Mass of fluorine gas = 60.0 g Volume of space, V = 4.80 L Pressure of gas, P = 6.45 atm

Q: What mass of SO3 is contained in a 11.0 L tank at 2.58 atm and 98 °C ? 53.1 g 74.6 g 283 g 22.7 g…

A: Given: P= 2.58 atm V= 11.0 l T = 980C = 371 K

Q: What is the density of O2 gas in g/L at STP ?

A: Using the formula of density and ideal gas equation we can find density of O2 at STP.

Q: CH3OH can be synthesized by the following reaction. CO(g)+2H2(g)→CH3OH(g) What volume of H2 gas (in…

A: Given, Methanol is 23.0 gT = 273 + 90 = 363 K.Pressure = 758 mmHgMolar mass of methanol is = 32 g/…

Q: g/L) of uranium hexafluoride (UF) at 784 mmHg and 63°C?

A: Temperature is given in degree Celsius, and pressure is given in mm of Hg.  So apply the gas…

Q: A 14.0 g sample of N2 (g) occupies what volume at 0 degrees C and 1.00 atm?

A: First the given grams of N2 is converted into moles.

Q: what is the molar mass of the gas?

A: Given :-  Mass of gas = 0.700 g  Volume occupied by gas = 198 mL  Temperature = 30°C  Pressure = 665…

Q: If 82.5 mol82.5 mol of an ideal gas occupies 63.5 L63.5 L at 43.00 ∘C,43.00 ∘C, what is the pressure…

A: From the gas law we can calculate it .

Q: If 3.62 L of O2(g) is required to react completely with a 5.50 g sample of C(s) at 48°C, what was…

A: Given: The temperature, (T)=480C=(48+273.15)=321.15K. The volume of O2, (V)=3.62 L. The given mass…

Q: A gaseous mixture of Xe and F 2 has a density of 3.244 g/L at 2.566°C and 619.5 mm Hg. What is the…

A: Formula used Pm = dRT where  p= pressure, m = molar mass, d = density  R = gas constant, T=…

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.