Molecular speed Fraction of molecules

Q: During laparoscopic surgery, carbon dioxide gas is used to expand the abdomen to help create a…

A: Use the combined gas law formula: where,  P1 and P2 represent the pressures in atm. V1 and V2…

Q: 1) A student is preforming the baking soda (NaHCO3) with vinegar (CH COOH) volcano experiment. If…

A: For STP. P = 1 atmT = 273 KV = 5.00 Lmolar mass of NaHCO3 = 84.01 g/molR = 0.08206 Latm/molK

Q: Which of the following statements are true? Which are false? Why is each true or false? (c) A…

A: A substance has three basic physical property- volume, pressure and temperature

Q: A neon sign is made of glass tubing whose inside diameter is2.5 cm and whose length is 5.5 m. If the…

A: Since we know that PV = nRT  where P = pressure  V = volume of gas n = moles of gas R = 0.0821  T =…

Q: A 20.0-L gas cylinder contains 4.80 g H2at 258C. What is the pressure of this gas?

A: Moles of H2 gas , n = mass molar mass = 4.802= 2.40 mol  Temperature , T = 258 + 273.15 = 531.15 K…

Q: 10.9 Consider the following graph. (a) If curves A and B refer to two different gases, He and O2, at…

A: a. At a fixed temperature, the relation between molar mass and probable speed is given as,

Q: 10. LiOH is used to condition air in spacecraft by absorbing the carbon dioxide exhaled by…

A: According to the balanced equation, 2 moles LiOH can absorb 1 mole CO2.  We can convert the mass of…

Q: Q: 42.5 L of ammonia (NH3) and 51.0 L of oxygen (O₂), both at STP, react according to the following…

A: Limiting reactant :- A reactant which is present in lesser number of moles than required as per…

Q: Suppose the O, gas evolved by a certain chemical reaction taking place at 50.0 Cis collected over…

A: Given: Temperature = 50oC Volume of gas collected in the collection tube = 118 mL To determine: Mass…

Q: At an altitude of 11,000 m (a typical cruising altitude for a jet airliner), the air temperature is…

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Q: The combustion of octane, C, H, proceeds according to the reaetion shown. 18 2 C,H18() + 25 O,(g) →…

A:

Q: Calcium carbonate, CaCO31s2, the principal compound in limestone, decomposes upon heating to CaO(s)…

A: Given, P = 1.3 atm V = 250 mL T = 310C

Q: Find density of a gas inside a metal cylinder that contains 0.76 moles of C4H8 gas at 273°C and 2.00…

A: The objective of the question is to find the density of a gas inside a metal cylinder that contains…

Q: Q7. A gas mixture that has the following composition in percent by volume: 10.2% CO2, 21.0% CO,…

A: Let the total composition of the mixture be 100 mL. The volume of CO2, CO, H2, CH4 and N2 can now be…

Q: What is the density of Cl2 gas [molar mass = 70.90 g/mol] at 34.9∘C and 1.22 atm?

A: Density of a gas is given by the expression. d=PMRT where d is the density of gas, P is the pressure…

Q: When an evacuated 63.8-mL glass bulb is filled with a gas at 22°C and 747 mmHg, the bulb gains…

A: Given: Formulas that are used in this problem are,

Q: Helium is used to inflate football-shaped bal- loons that will be released in Memorial sta- dium for…

A:

Q: CH3OH can be synthesized by the reaction : CO (g) + 2H2 (g) -----> CH3OH (g) How many liters of…

A: The objective of this question is to determine the volume of H2 gas required to synthesize 0.71 mol…

Q: Dilute aqueous hydrogen peroxide is used as a bleachingagent and for disinfecting surfaces and small…

A:

Q: 11. Methane, the principal component of natural gas, is used for heating and cooking. The combustion…

A: Given- Moles of CH4= 15.0 moles  Pressure=0.985atm Temperature=23°C=296K Volume of CO2=?

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

A: We have to calculate the density of the mixture.

Q: A mixture used by divers for breathing purposes contains 34.3% helium (He), 51.7% nitrogen (N2) and…

A:

Q: 10.38 (a) If the pressure exerted by ozone, O3, in the stratosphere is 3.0 X 10-3 atm and the…

A: pO3 = 3.0 * 10-3 atm T = 250 K V = 1 L   % of CO2 = 0.04 % Volume of Sample = 2.0 L P of sample = 1…

Q: 2 Co (s) + O2 (g) --> 2 CoO (s) If 8.18 grams of solid cobalt react in a 3.21 L vessel at -34.80 oC…

A:

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A: Temperature = 45.0 oCVVolume of gas = 116 mL

Q: valve between the two bulbs is opened and the two gases mix. (a) What is the partial pressure…

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Q: Butane, C4H10, is used as a fuel for camping. If you have 108 mL of butane gas at 715 mmHg and 25…

A: According to ideal gas law PV = nRT  where P =pressure in atm  V = volume in L  n = moles of gas R =…

Q: The catalytic decomposition of hydrogen peroxide yields oxygen gas and water, according to the…

A: The given reaction is as follows:

Q: In the fermentation of glucose (wine making), 760 mLmL of CO2CO2 gas was produced at 31 ∘C∘C and…

A: Given :  initial pressure = 1.20 atm  initial volume = 760 mL  initial temperature = 31°C  final…

Q: A sealed flask contains 3.1 L of a gas at 2.4 atm and 22.7 °C. If the density of the gas is 9.7 g/L,…

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Q: Consider the image of a mercury manometer below. Based on the image, if the pressure of the…

A: The absolute pressure or total pressure of any fluid is calculated as follows, Absolute pressure =…

Q: At constant pressure, the mean free path (λ) of a gas moleculeis directly proportional to…

A: Please go through the below pic for solution.

Q: At constant pressure, the mean free path 1l2 of a gas moleculeis directly proportional to…

A: Let the mean free path be ƛ, temperature be T, Pressure be P and diameter be d. At constant…

Q: A gas occupies a volume 1.27 L and 25 Celsius is adjusted to new volume of 1.02 L at standard…

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Q: A gaseous "CFC" compound has a density of 5.456 g/L at 0.993 atm and 22.0°C. (a) Calculate the molar…

A: Given , density of CFC =5.456gL Pressure = 0.993 atm temperature, T=22°C =(22+273)K=295 K

Q: Sodium peroxide (Na2O2) is used to remove carbon dioxide from (and add oxygen to) the air supply in…

A: Concept introduction: Number of moles of substance is equal to the ratio of mass to molar mass.…

Q: A container holds SO₂ gas at a temperature of 60.0°C. Calculate the quantities below in the…

A: Formulae used: Vmp = 2RTM Eavg=32RT Vrms = 3RTM

Q: .  If 10.0 L of neon gas exerts a pressure of 25.0 atm at 50oC, how many moles of neon are present

A: For ideal gas we know that PV = n RT  Where, at pressure P and temperature T  ,volume  of n mol of a…

Q: What is the density (in g/L) of hydrogen gas at 19.0 ∘C and a pressure of 1665 psi ?

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Q: A cylinder contains 12.8 L of air at a total pressure of 45.0 psi and a temperature of 30 ∘C. How…

A: Given: The volume of air in the cylinder = 12.8 L The total pressure = 45.0 psi Temperature = 30 ∘C…

Q: A gaseous mixture of Ne and Ar has a density of 1.014 g/L at 2.439°C and 628.8 mm Hg. What is the…

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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.