How much potassium chlorate is needed to produce 20.0 mL  of oxygen gas at 680. mmHg  and  25 ∘C? Express the mass to three significant digits.

Q: What is the density of hydrogen gas at 64.0 °C and 3.58 atm? O 7.26 g/L. O 1.14 g/L O 0.259 g/L

A: First we will consider that hydrogen gas obey ideal gas equation.  PV = nRT  Where, n = number of…

Q: A 4.5-liter sample of gas at 760.0 T and 0.0°C is heated to 65°C. What volume must the gas occupy if…

A: Initial Volume, V1=4.5 L Initial temperature, T1=0.0°C + 273 =273 K Final temperatue=65°C =65 + 273…

Q: You’re burning propane, C3H8,in the lab and it burns in oxygen to form carbon dioxide and water.…

A: In the complete combustion of Propane (C3H8), Volume of Propane (C3H8) = 3 L Temperature, T= 18°C…

Q: pllege.com/course. tml?courseld%3=16914186&OpenVellumHMAC=Df8cc2710256b118234d2cdf Maps M Gmail…

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Q: Calculate the molecular weight of a gas whose density is 1.23 g/L at 0.750 atm and 20.0 degrees C

A: Density of a gas can be expressed in terms of pressure, temperature and molar mass. Write the…

Q: What volume of ammonia is required to react with 169 liters of oxygen gas according to the following…

A: Given reaction- NH3 (g) + O2 (g)  →   NO (g) + H2O (g) Balanced reaction- 4 NH3 (g) + 5 O2 (g)  →…

Q: 2- What is the density of neon gas in g/L at STP? A. 452.3 B. 226.0 C. 1.802 D. 0.9018

A: molar volume of gas at stp = 22.4 L molar mass of Neon = 20.14 g denisty = mass/volume

Q: Rank the samples of gas described in the table below in order of increasing average speed of the…

A: Answer: Formula for the average speed of the gas molecules is shown below: Cavg=8RTπM Here:…

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25 °C. With pressure and…

A: Given that : Volume of the gas in balloon(V1) = 1.50 L Initial Moles of gas(n1) = 3.00 moles Final…

Q: Rank the samples of gas described in the table below in order of increasing average speed of the…

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Q: Acetylene (C2H2) burns in oxygen to form carbon dioxide and water. How many liters of oxygen at 45oC…

A: The balanced chemical equation for the combustion of acetylene can be written as follows: C2H2 (g)…

Q: Perform the conversions. 970.5 mmHg atm 2.091 atm = Torr 408.4 kPa = atm 1220.6 mmHg Pa =

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Q: A sample of a gas was isolated in a gas containment bulb on a manifold used in this type work. The…

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Q: A 10.0 L tank at 25.1 °C is filled with 6.70 g of dinitrogen monoxide gas and 10.9 g of sulfur…

A: Given :-  Mass of N2O = 6.70 g  Mass of SF4 = 10.9 g  Volume = 10.0 L  Temperature = 25.1°C  To…

Q: How many moles of oxygen will occupy a volume of 2.5 liters at 1.2 atm and 25°C?

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

Q: Consider the formation of nitrogen dioxide from nitrogen monoxide and oxygen:             2 NO(g)…

A: Given reaction is :

Q: A sample of gas occupies a volume of 101mL at 220.0 torrent and 30.5 Celsius. Calculate the volume…

A: Given information: Initial volume (V1) = 101 mL Initial pressure (P1) = 220.0 torr Initial…

Q: A glass vessel weighs 40.1305 g when clean, dry, and evacuated; it weighs 138.2410 g when filled…

A: Given that,  Weight of empty glass vessel = 40.1305g Weight of vessel when filled with water =…

Q: Assume that 67.0 L of N2 gas are needed to inflate an airbag to the proper size. How many grams of…

A: The reaction for the formation of N2 from NaN3 – 2NaN3s →2Nas +3N2g

Q: Which of the following gases has the  highest average speed at 400K?     He      Kr      NO…

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Q: What volume (in liters) is occupied by 4.24×1022 nitrogen molecules at 100 ∘C and 285 mmHg? Express…

A: Given Number of molecules, Temperature and pressure of Nitrogen gas molecules.

Q: Solve it asap

A: Here 1.75 g of Mg was mixed 125 ml of 0.2 M HCl solution at 25°C and 1.06 atm pressure.We have to…

Q: An unknown gas in a balloon weighs 73.53 g. The balloon occupies 20.00 L at 22.0 °C and 1056 mm Hg.…

A: Given the mass of gas =73.53 gvolume of gas =20.00 Ltemperature =22.0 °C =(22+273) K =295 Kpressure…

Q: Determine the molar mass of a gas with a density of 1.54 g/L at 30.0oC and 742 mm Hg.

A: Recall ideal gas equation      PV=nRTAs,molesn=mass of gaswMolar mass of gasMSo, PV=wMRT…

Q: 15. The density of a certain gas at 27.0°C and 98.66 kPa is 2.53 g/L. Calculate its molecular mass.

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Q: A 3.00-g sample of KC1O3 is decomposed and the oxygen at 24.0°C and 545 mmHg is collected. What…

A: Mass of KClO3 = 3 gm  Molar mass of KClO3 = 122.5 gm/mole  Moles of KClO3 = 3/122.5 = 0.0245 moles…

Q: Use the following equation to calculate the grams of CaH2 to generate 29.2 L of hydrogen gas at STP.…

A: The reaction given is CaH2(s) + 2H2O(l) → Ca(OH)2(s) + 2H2(g) Given : volume of H2 gas generated =…

Q: 2. Consider the following data for a sample of gaseous oxygen (O2) at a pressure of 1 atm:…

A: Option (a): The graph of temperature (y-axis) versus volume (x-axis) is plotted as follows,

Q: Determine the molecular mss of gas where 3.14 g occupies 0.84 L at standard conditions of temp and…

A:

Q: NaHCO3 + HCl --> NaCl + CO2 + H2O If 4.06g NaHCO3 is reacted and the CO2 produced is collected in a…

A: Ideal gas is the gas that obeys ideal gas equation i.e. PV = nRT at all temperatures and pressures.…

Q: Calculate the volume (L) occupied by 2.12 moles of nitric oxide (NO) at 6.54 atm and 76 degrees…

A: Ideal gases are observed as the gas molecules that have no force of attraction/repulsion, the volume…

Q: How many liters of carbon tetrafluoride gas at STP does 4.582 x 1024 molecules occupy? Answers must…

A: The amount of carbon tetrafluoride (CF4) gas in liters at STP does 4.582×1024 molecules occupy, it…

Q: The execution manager of the lethal gas chamber in the state penitentiary adds excess dilute…

A: Given -> Weight of NaCN = 196 gm Atomic mass of Na = 23 g/mole Atomic mass of C = 12 g/mole…

Q: Calculate the density of HBr gas in g/L at 733mmHg and 46oC

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Q: Part B To identify a diatomic gas (X2), a researcher carried out the following experiment: She…

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Q: How many grams of phosphorus trihydride are present in 85.89 milliliters of the gas at STP? Answers…

A: According to the ideal gas equation, the volume of one mole of an ideal gas at STP is = 22.4 L/mol…

Q: How many grams of solid potassium chlorate (KClO3) decompose to form solid potassium chloride and…

A: Please find the below attachments.

Q: A 8.00 L tank at 7.18 °C is filled with 3.89 g of dinitrogen difluoride gas and 7.15 g of carbon…

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Q: A box contains equal amounts of helium, argon, and krypton (all gases) at 25 °C. Using complete…

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Q: What volume (in liters) is occupied by 3.17×1022 nitrogen molecules at 85 ∘C and 305 mmHg ?

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Q: A sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0%…

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Q: Convert 797 mm Hg to atm

A: 1 atm = 760 mm Hg Given: 797 mm Hg

Q: Rank the samples of gas described in the table below in order of increasing average speed of the…

A:

Q: Ammonia and gaseous hydrogen chloride combine to form ammonium chloride.  NH3(g) + HCl(g)…

A: Given that the mass of ammonia is 4.21 g which combines with HCl to form NH4Cl. The reaction is…

Q: Dinitrogen monoxide gas is collected at −4.0°Cin an evacuated flask with a measured volume of…

A: PV=nRT 0.360*50=n*0.0821 L atm mol-1 k-1*269 n=0.815 mol mass= n* molar mass             = 0.815*44…

Q: What volume of carbon dioxide is produced when 130 liters of carbon monoxide react according to the…

A: From given,we know PV=nRT n= PV/RT so V=nRT/P

Q: Rank the samples of gas described in the table below in order of increasing average speed of the…

A: we need to rank the given molecules of gas according to average speed

Q: Butane, C4H10, is an easily liquefied gaseous fuel. Calculate the density of butane gas at 0.957 atm…

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Q: 1.Would you expect a 250 mL or 500 mL graduated cylinder to be more or less precise than a 100 mL…

A: Solution :      The precision associated with different types of equipment and instruments used in a…

Q: Rank the samples of gas described in the table below in order of increasing average speed of the…

A: The average speed of an atom or molecule is dependent upon the temperature and molar mass of the…

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.