A helium-filled weather balloon has a volume of 596 L at 17.9°C and 759 mmHg. It is released and rises to an altitude of 7.61 km, where the pressure is 341 mmHg and the temperature is –28.1°C. The volume of the balloon at this altitude is |L.

Q: White phosphorus melts and then vaporizes at high tempera-ture. The gas effuses at a rate that is…

A: The Scottish physical chemist Thomas Graham gives direct relation between rate of effusion of gas…

Q: Calculate the final temperature of a sample of gas initially at 22.3 0C that is expanding from 2.335…

A: As per the ideal gas law, PV = nRT  where P = pressure  V = volume  n = moles  R = gas constant  T =…

Q: Two vessels are labeled A and B. Vessel A contains NH3 gas at 86°C, and vessel B contains Ne gas at…

A:

Q: Which of the three gases will have the highest root-mean-square speed? UF6 F2 NF3 The three gases…

A: 1. Highest root-mean-sqaure speed: Therefore, the highest root-mean-sqaure speed is F2 gas. Correct…

Q: The combustion of octane, C8H18 , proceeds according to the reaction shown. 2C8H18(I) + 25 O2…

A: The number of moles of carbon dioxide, produced in the reaction, is calculated as shown below where…

Q: A combustion reaction involving 628.0 g n-butanol (C,H100) occurs at 345.0 °C and 15.2 atm. What…

A: Given :-  Amount of butanol = 628.0 g  Temperature = 345.0 °C  Pressure = 15.2 atm  To calculate :-…

Q: Consider the reaction: 2 Ag2O(s) ---------> 4 Ag(s) + O2(g) If this reaction produces 15.8 g of…

A: Mass of Ag = 15.8 g Molar mass of Ag = 107.9 g/mol Moles = massMolar mass=15.8 g107.9 g/mol=0.146…

Q: A weather balloon is inflated to a volume of 24.5 L at a pressure of 750 Torr and a temperature of…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant T =…

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: 9. A combustion reaction involving 628.0 g n-butanol (C,H100) occurs at 345.0 °C and 15.2 atm. What…

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

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

A: Given data: T= 20°C= 293K , P = 765 mm Hg =765/760 atm , mass of Magnesium nitride= 3.58 gm , R=…

Q: O2 is prepared by decomposing calcium chlorate (Ca(ClO3)2) and collecting 255 ml sample over water…

A: Given data -  total pressure = 798 mmHg  vapor pressure of water at 40o C = 55.3 mmHg Volume = 255…

Q: A particular balloon is designed by its manufacturer to be inflated to a volume of no more than…

A:

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: The combustion of octane, C,H,g, proceeds according to the reaction shown. 18 2CH18(1) + 25 O,(g) –…

A:

Q: A barometer reading gives a pressure of 756 mmHg. What is this value in units of atm?

A: Given Value of pressure reading in terms of mmHg as 756 mmHg

Q: Determine the final pressure of a gas, initially at 3.0 L, 2.2 atm, and 72oC, which undergoes a…

A:

Q: The speed that a body of any mass must have to escape from the earth is 1.07 x 10ª m s-'. At what…

A:

Q: The combustion of octane, C,H,18, proceeds according to the reaction shown. 2 C,H,(1) +25 0,(g) 16…

A:

Q: B. In the following graphs, velocity represents the molecular speed, Velocity (m/s) (i) If the plot…

A: Ideal gases are hypothetical gases which do have real existence. A gas can behave ideally at low…

Q: At what temperature does the rms speed of O2 molecules equal 475. m/s?

A:

Q: 5.41 A sample of a smokestack emission was collected into a 1.25-L tank at 752 mm Hg and analyzed.…

A: For 100 g sample, Mass of CO2 = 92 g Mass of NO = 3.6 g Mass of SO2 = 1.2 g Mass of water = 4.1 g

Q: The combustion of octane, C,H,8, proceeds according to the reaction shown. 2 C3H18(1) + 25 0,g) 16…

A: Number of moles of CO2 produced by combustion of 2 mol of octane = 16 mol Number of moles of CO2…

Q: Helium-filled balloons are used to carry scientific instruments high into the atmosphere. Suppose…

A: Helium-filled balloons are used to carry scientific instruments high into the atmosphere. Suppose…

Q: A weather balloon is launched and attains a height of 120,000 feet before bursting. At the moment…

A: Boyle’s law is a gas law which states that the pressure exerted by a gas (of a given mass, kept at a…

Q: A 144.6 mL sample of O2 gas at 509.6 torr is compressed at constant temperature to 87.5 mL. Predict…

A:

Q: We find that a mass of 0.896 g of a gaseous compound, containing only nitrogen and oxygen, occupy a…

A:

Q: Heptane (C7H16) gas reacts with oxygen gas to give carbon dioxide gas and water vapor.  If you mix…

A: C7H16+11O2=7CO2+8H2O No excess reagent reagent is used So, now mole of heptane required=1 mole Mole…

Q: If the temperature of a gas confined to such a cylinder is raised from 251°C to 536°C, what is the…

A: Gas is considered to be the third state of matter. The behaviour of gases can be well explained…

Q: Is the relationship between pressure and temperature direct or inverse? Explain

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Q: At a certain temperature, the speed of six gaseous molecules in a container are 2.0 m/s, 2.2 m/s,…

A: Root mean square value is devired as square root of mean square or it is the sum of square of…

Q: The combustion of octane, C,H, proceeds according to the reaction shown. 18 2C,H18(0) + 25 0,(g) 16…

A: We can solve the problem by considering the ideal gas law.  PV = n. R. T Where  P = pressure of the…

Q: As part of the rock analysis, a student added hydrochloric acid to a rock sample and observed a…

A:

Q: In a system, you have 246mmHg of Oxygen (P1), 385mmHg of Hydrogen (P2). and 288mmHg of Carbon (P3).…

A: Given : pressure of Oxygen, hydrogen and carbon.  To find : total pressure of the system.  Solution…

Q: you collect 552 mL of argon gas at 23.0C. what volume will the gas occupy at 46.0C if the pressure…

A: At constant pressure,  V1/T1 = V2/T2  V1 = initial volume  T1 = initial Temperature  V2 = final…

Q: define and explain the ideal gas law and avogadro's law in its simplest form

A: Ideal gas law  There are various ways to derive the Ideal Gas Law, but the simplest way is to use…

Q: Please identify the each stament below whether it is true or false, and leave an explanation. Thank…

A: Given:- Identify  whether it is true or false, and leave an explanation:-  1. All the gases in the…

Q: If a gas filled balloon has a volume of 1 Liter at ten feet underwater, would you predict the volume…

A: The volume of the balloon would decrease.

Q: If the rms speed of an oxygen molecule at a particular temperature is 4.28 x 10^4 cm/s, what is the…

A: The root mean square velocity basically gives the average velocity of the gas molecules by…

Q: The barometric pressure is generally given in units of inHg. Convert inHg to atm. Recall that 2.54cm…

A: For converting inHg to mmHg we will do the following:-                   1 inch = 2.54cm ⇒1inHg =…

Q: Consider the reaction: 2Na (s) + Cl2 (g)  2NaCl (s) Calculate volume of chlorine gas measured at…

A:

Q: The combustion of octane, C,H8, proceeds according to the reaction shown. 2C,H (1) + 250,(g) 16…

A: Given, Moles of octane = 595 moles Temperature of reaction, T = 32oC Pressure of reaction, P = 0.995…

Q: both questions please

A: 1)The balance chemical equation as follows:

Q: (a) Place the following gases in order of increasing averagemolecular speed at 25 °C: Ne, HBr, SO2,…

A: The molecular speed of gas molecules is inversely proportional to the root of their molar mass.…

Q: O2 is prepared by decomposing calcium chlorate (Ca(ClO3)2) and collecting 255 ml sample over water…

A: The balanced chemical equation that depicts the decomposition of calcium chlorate can be written as:…

Q: An expandable balloon filled with 100.0 L of helium at 750 torr and 20°C is launched from ground…

A: As per the given data in the question,P1 = 750 torr; V1 = 100.0 L; T1 = 20 + 273 = 293 KP1 = 190…

Q: Ammonium nitrate decomposes explosively upon heating according to the balanced equation:2 NH4NO3(s)…

A:

Q: This relationship is known as Graham’s Law of Effusion. Since both gases are at the same…

A: Given Data: mLmH=vHvL2 vHvL=12 Molar Mass of light gas (Neon) = 20 g/mol

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.