What is the rms speed of He atoms at 485 K ? ( in m/s)

Q: A high altitude balloon has a volume of 2.43 L at 755 torr and 20.1 C. What is the volume at 1.00…

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Q: The normal maximum pressure exerted by a human heart is 120. torr. Calculate the normal maximum…

A: Given  Pressure exerted by human heart = 120 torr  We have to convert the pressure into mmHg and…

Q: Calculate the rms speed of an oxygen gas molecule, 02, at 21.0 °C. Express your answer numerically…

A: Given : Temperature : 21.0°C   OR   294 K Molar mass of oxygen molecule(O2) = 32 g/mol  OR  3.2 ×…

Q: A sample of oxygen was collected over water at 25.00°C and 0.884  atm. If the total sample volume…

A: According to the ideal gas equation, we can write: PV = nRT Where P, V, n, R, and T represent…

Q: If o.358 grams of potassium reacts with an excess amount of water, what volume of H, gas will be…

A: Reaction taking place:  2K (s)  +  2H2O(l) → 2KOH(aq) + H2(g) 2 moles of K gives 1 mole of H2

Q: The density of oxygen is 1.43 g/L at STP. Determine the density of oxygen at 17 Celcius and 800 Torr

A: The effect of pressure and temperature is measured by Boyle’s law and Charles's law respectively.…

Q: point) A balloon filled with helium gas at 40°C occupies 2.91La immersed in liquid nitrogen at…

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Q: f the rms speed of an oxygen molecule at a particular temperature is  4.28x104cm/s, what is the rms…

A: Step : 1           What is the rms speed of an NH3 molecule at the same temperature?

Q: A volume of 200. mL oxygen is collected over water at 15 degrees C and 700. mm Hg. If the pressure…

A: Any gas is described by using four terms namely pressure, volume, temperature and the amount of gas.…

Q: The combustion reaction of Ammonia plus oxygen produces NO2 gas and water vapor (gas). If the…

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Q: What mass of Ba(Bro.), is needed to produce 78.93 liters of O,gas at 56 C and 818 torr? Ba(Bro.), →…

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Q: A nitrogen molecule at the surface of earth happens to have the rms speed for that gas at 0°C. If it…

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Q: A gas constant temperature occupies a volume of 6.41 L and exerts a pressure of 801 torr. What…

A: Given information,      Initial pressure 801 torr = 1.054 atm      Initial volume is  6.41 L.…

Q: what is the rms velocity of carbon monoxide molecule at 40.0 C

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Q: A balloon is filled inside a chamber to a total volume of 18.2 L. The total pressure in the…

A: According to Boyle’s law, at constant temperature the pressure P of a gas differs inversely to its…

Q: A 2.68 L container of oxygen gas at 27.9 °C is heated to 46.8 °C. Assuming that the volume of the…

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Q: A gas weighing 23.6 g occupies a 10.0 L flask at 27.0 °C and 740 torr. Calculate the molar mass of…

A: Mass of a gas = 23.6 g  Volume = 10.0 L  Temperature = 27.0 °C  Pressure = 740 torr  Molar mass of…

Q: How much faster do helium atoms effuse from a balloon than do oxygen molecules?

A: According to the graham's law of effusion, where vA = speed of effusion or rate of effusion of gas…

Q: A sample of chlorine gas (Cl₂) is confined in a 5.0L container at 28 torr and 27°C. How many mols of…

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Q: In 1783, Jacques Charles launched his first balloon filled with hydrogen gas, which he chose because…

A: Given data is as follows: The volume of the balloon = 32000 L The mass of hydrogen gas needed to…

Q: A sample of gas has a volume of 400ml When measured at 25ﾟC and 760 torr what volume will it occupy…

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Q: A mixture of chromium and zinc weighing 0.363 grams was reacted with excess HCl. After all the metal…

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Q: What volume of oxygen gas is produced

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Q: The hydrogen gas formed in a chemical reaction is collected over water at 30.0 ∘C at a total…

A: The hydrogen gas formed in a chemical reaction is collected over water at 30.0 ∘C at a total…

Q: Part A How long does it take a person at rest to breathe one mole of air if the person breathes 85.0…

A: #Part-A: Given the moles of air, n = 1 mol Temperature, T = 25 oC + 273.15 = 298.15 K pressure, P =…

Q: A balloon is filled inside a chamber to a total volume of 23.0 L. The total pressure in the…

A: Given: Volume (V1) = 23 L                                  Volume (V2) = 36.5 L…

Q: What is the volume of a balloon that contains 2.75 moles of argon gas at STP? ( to the correct…

A: Ideal gas equation, PV=nRT Where, P=pressure, V=Volume, n =number of moles R=gas constant…

Q: 5.83 Calculate the rms speeds of N, molecules at 25°C and at 125°C. Sketch approximate curves of the…

A: The Molar mass of N2 = 28 g/mol. The rms speed of the gas can be calculated by the following…

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: flourine gas exerts pressure of 297 torr when the volume changes to 250 mL at STP.what was the…

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Q: 50.0 mL of 6.0 M acetic acid reacts with 1.55 g magnesium.  What volume of hydrogen gas will be…

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Q: The volume of a gas at STP is 2145 mL. What will be its new volume at 32˚C and 817 torr?

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Q: 1- One mole of nitrogen and one mole of neon are combined in a closed container at STP. How big is…

A: Ideal gas equation is given as follows :- PV=nRT where, P=pressure; V= volume; n=moles; R=gas…

Q: A 458.8-ml sample of helium exertsa pressure of 668.8 torr at 25.9 °C. At what temperature in °C…

A: Gases expand supplying temperature. Particles of gases have weak binding forces. Gas particles are…

Q: You conduct an experiment where you react 25.5 grams of Iron with with HClag) to form H2(e) in a…

A: First, we calculate the number of moles of hydrogen gas with the help of moles of iron. then we…

Q: What volume will 2.0 moles of nitrogen occupy at 720 torr and 20 C

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

Q: 7. The volume of a gas-filled balloon is 50.0 L at 20.0∘C and 742 torr. What volume will it occupy…

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Q: What is the density of ammonia gas, , at 35°C and 757 mmHg? Obtain the density in grams per liter.

A: Given: Temperature = 35.0 oC = 308 K Pressure = 757 mmHg = 0.9960 atm Molar mass of ammonia gas…

Q: What volume in L of chlorine at 30°C and 791 torr is required to react completely with 5.43 g…

A: The balanced chemical equation is  2Al(s)     +       3Cl2(g)------>      2AlCl3(s) 2.0 mol…

Q: A 2.50 L volume of hydrogen measured at -196 is warmed to 100. Calculate the volume of the gas at…

A: Solution - According to the question - Given - Charles law - Charles's law is an experimental gas…

Q: Heating potassium chloride KC1O3 yield oxygen gas in potassium chloride what volume in liters of…

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Q: (a) Place the following gases in order of increasing average molecular speed at 25°C: CO, SF, H,S,…

A: In this question, we have to arrange the following gases in order of their increasing average…

Q: What is the molecular weight of a gas if 500 mL weighs 10 g at -23 °C and 380 torr?

A: Given : Volume of gas= 500 ml             Mass of gas= 10g             Temperature  =-23oC…

Q: When 66.4 g nitrogen and excess oxygen react, nitrogen dioxide is generated.  If the NO2 is…

A: The reaction, ___N2 (g) + ___O2 (g) → ___NO2 (g)  Mass of nitrogen = 66.4 g Molar mass of nitrogen =…

Q: A sample of oxygen gas has a volume of 3.24 L at 31°C. What volume will it occupy at 147°F if the…

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Q: How many grams of potassium chlorate decompose to potassium chloride and 738 mL of O, at 128°C and…

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Q: What is the rms velocity of Xe atoms at -14 o C?

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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.