A 0.480-g sample of a gaseous compound occupies 367 mL at 45 °C and 365 mmHg. Which of the following is the most probable identity of the gaseous compound? Relative atomic masses: H = 1.008; C = 12.011; 0 = 15.999; S= 32.06; CI = 35.45 %3D Select one: O a. SO2 O b. Cl2 О с. Нао O d. co

Q: What mass of nitrogen is needed to fill an 855 L tank at STP? A. 978 g B. 870 g С. 533 g D. 1071 g O…

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Q: 1. a) Consider the following balanced chemical equation: 2AI(s) + 3C12(g) 2AIC13(s) Determine the…

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Q: What is the density of Argon (Ar) at 298 K and 1.10 atm? a. 0.556 g/L O b. 22.2 g/L c. 1.80 g/L O d.…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: 2. Calculate the number of grams of O2 in a 100.0 L cylinder at STP a. 4.46 b. 71.4 с. 143 d. 7.17…

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Q: Chemical analysis of an unknown compound shows that it contains 64.9%C, 13.5%H, and 21.6% O by mass.…

A: Given  Multipart questions

Q: A volume of 0.50 L of air at 37 °C is expelled from the lungs into cold surroundings at 0.0 °C. What…

A: Given data, V1 = 0.50 LT1 = 37°C = (37 + 273) = 310KT2 = 0.0°C = 273K To calculate the volume.

Q: 6. Chemical analysis of an unknown compound shows that it contains 64.9% C, 13.5% H, and 21.6% O by…

A: Please find your solution below : Empirical formula of a compound is defined as the simplest whole…

Q: 3. Calculate the new pressure if the volume of 15.00 L of oxygen at 450.0 mmHg increases to 90.00 L.…

A: 3) Given data contains, Initial volume is 15.00 L. Initial pressure is 450 mm Hg. Final volume is…

Q: 4. When 24.0 grams of ethanol (C₂H5OH) combusts with 9.00 grams of oxygen, what volume of carbon…

A: 4) we need to calculate the volume of water and carbon dioxide produced in the reaction

Q: Considering the following reaction:                   2H2 (g) + O2 (g) → 2H2O (l)   If 5.32 g of…

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Q: What volume (in L) would 8.78 g of nitrogen gas (28 g/mol) )occupy at 44.7 °C and a pressure of 1.03…

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Q: P4(g) + Br2(g) --> PBr3(g) If 18.2 L of phosphorus at 21 oC and 1.02 atm is reacted with 62.4 L…

A: Reaction's stoichiometry obtained by numbers associated to species in balanced equations tells us…

Q: What volume would 50.0 g of propane, C3HS, occupy at 1.40 x 102°C under a pressure of 1.82 x 10…

A: Given, Mass of propane = 50.0 g Temperature (T) = 1.40 × 102°C = 140°C = (140 + 273.15) K = 413.15 K…

Q: Uranus is much larger than Earth, with a surface area of 8.10 × 1015m2with an atmosphere of…

A: The mass per unit area of the atmosphere of Uranus can be calculated by dividing its atmospheric…

Q: Formic acid, HCHO2 is a convenient source of small quantities of carbom monoxide. When warmed with…

A: Reaction involved: HCHO2 → H2O + CO Firstly finding out the PCO  PCO = Ptotal - PH2OPCO  = 689 -…

Q: The density of nitrogen at 0.913 atm and 18°C is 1.07 g/L.  Explain how these data show that the…

A: Density of the gas(ρ) = PM RT Density of the gas(ρ) =1.07 g/L. P = pressure of gas = 0.913 atm M =…

Q: Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3 N2 . Magnesium…

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Q: Consider the balanced reaction: 2 NaN3 (s) → 2 Na (s) + 3 N2 (g) What volume of N2 (in L) is…

A: The empirical  relationship  between volume , temperature , pressure  and amount of  of gas…

Q: What volume of water vapor would be produced from the combustion of 595.39 grams of propane (C3H8)…

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Q: A sample of carbon dioxide occupies 475 mL at a temperature of 19 °C a a pressure of 375 mm Hg. What…

A: Given data set: Carbon dioxide gas has volume= 475 ml = 0.475 L Temperature= 19 °C = 292 K Pressure…

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

A: The partial pressure of O2, PO2, and the number of moles of O2 is calculated as shown below.…

Q: 11. Given the following reaction: 2 HC₂H₂OH (1) + 3 O2 (g) → 4 CO2 (g) + 5 H₂ (g) If we started off…

A: Given reaction is :  2HC2H3OH (l) + 3O2 (g) ---------> 4CO2 (g) + 5H2 (g)  Volume of HC2H3OH =…

Q: 3. A sample of nitrogen occupies a volume of 0.50 L at 20.0°C. What volume would the gas occupy at…

A: According to the Charle's law at constant pressure , volume is directly proportional to the…

Q: 6. Chemical analysis of an unknown compound shows that it contains 64.9% C, 13.5% H, and 21.6% O by…

A: An unknown compound contains 64.9 % C, 13.5 % H and 21.6 % O by mass . At 120 °C and 750 mmHg,…

Q: 2 NaN3 (s) → 2 Na (s) + 3 N2 (g) What volume of N2 (in L) is produced from 2.50 mol of NaN3 at 306…

A: Moles of NaN3 given = 2.5 mol Pressure of N2 gas = 1185 mm Hg We know, 760 mm Hg = 1 atm So, 1185 mm…

Q: What mass of ammonium nitrate is required to produce 145. L of N2O at 2850. mmHg and 42.0 degrees…

A: The ideal gas equation is shown below: PV = nRT Where; P = pressure of the gas V= volume of the gas…

Q: Automobile air bags use the decomposition of sodium azide as their source of gas for rapid…

A: Volume of N2 gas is 30.0 L Temperature of the reaction is 25.0˚C Pressure of N2 gas is 758 torr. No.…

Q: A sample of carbon dioxide occupies 475 mL at a temperature of 19 °C and a pressure of 375 mm Hg.…

A: By help of Following combined ideal gas equation, we can calculate the volume of Carbon dioxide gas…

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: Helium occupies 6.82 L at 19 oC with a pressure of 954 mmHg. At what temperature will this helium…

A: 1) Calculate  the no. of moles of helium by using ideal gas equation - Given, P = 954 mmHg, V= 6.82…

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 volume will 12.0 grams of neon gas occupy at 25°C and a pressure of 0.520 atm?

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Q: The density of NO gas at 16°C and 1.27 atm is O a. 1.61 g/L. O b. 1.71 g/L. O c. 1.98 g/L. O d. 2.36…

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Q: 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…

A: "Ideal gas equation" PV=nRT helps in estimating the mole numbers of any gaseous compound. For given…

Q: What is the density of NO2(g) at 15.1°C and 754 mmHg? O 3.74 g/L O 1470 g/L O 1.93 g/L O 5.18 g/L O…

A: Note: As per our guidelines, we are supposed to answer only the first question when multiple…

Q: Determine the number of grams of nitrogen gas present in a 5.00-L cylinder at 4.00 x 103 mm Hg and…

A: Given, Pressure (P) = 4.00 × 103 mmHg = 5.26316 atm Volume (V) = 5.00 L Temperature (T) = 23.0°C =…

Q: An unknown compound is 53.5% C, 11.2% H, and 35.5% O. A. Determine the empirical formula. B. If a…

A: Empirical and molecular formula determination of a compound :

Q: 8. A certain anesthetic contains 64.9 percent carbon, 13.5 percent hydrogen, and 21.6 percent oxygen…

A: Given:Temperature T = 120 ℃ = 393 K.Pressure = 750 mmHg = 0.987 atm.Mass = 6.90 g.Volume = 1.00 L.

Q: c) When coal is burnt, the sulphur present in coal is converted to sulphur dioxide which is…

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Q: What volume of carbon dioxide gas would be produced from the combustion of 880.57 grams of propane…

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Q: 3. How many moles of N20 gas would have a volume of 3.8 L at 460 mmHg and 77 °C?

A: use ideal gas equation:  PV = nRT

Q: The combustion method used to analyze for carbon and hydrogen can be adapted to give percentage N by…

A: PV = nRT Where, P = pressure in atm, V = Volume in L, n = number of mol, R = 0.082 L atm mol-1 K-1,…

Q: In a mixture of helium and chlorine, occupying a volume of 12.8 L at 605.6 mmHg and 21.6°C, it is…

A: We have given that  In a mixture of helium and chlorine, occupying a volume of 12.8 L at 605.6 mmHg…

Q: What volume of hydrogen at 27 °C and 72 torr may be prepared by the reaction of 8.88 g of gallium…

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Q: 5) How many atoms of neon occupy a volume of 14.3 L at STP?

A: The volume of neon gas at STP is = 14.3 L The number of atoms of neon is =?

Q: If 3.220 L of fluorine gas reacts with excess xenon gas both at 2.000 atm and 450.0 K, how many…

A: The given reaction is as follows: 2F2(g) + Xe(g) → XeF4(s) The volume of the fluorine gas = 3.220 L…

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=…

Q: A convenient laboratory source for high purity oxygen is the decomposition of potassium permanganate…

A: According to Charles’ law, the volume shows direct relation with temperature that is, it is directly…

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

A: The given data contains, Pressure = 5.25 atm. mass = 5 g. Temperature = 623 K

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.