1.) Krypton gas (Kr) diffuses through a small hole at a rate of 8.7 m/sec. At what rate will carbon dioxide (CO2) gas travel through the same small hole? (1.

Q: In which of the following gases do the molecules have the highest average kinetic energy at 25 C?…

A: Since for the diatomic molecules, The average kinetic energy is given by  KE = 3RT/2 where KE =…

Q: These organic solvents are used to clean compact discs : (a) If a 15.00-mL sample of CD cleaner…

A: Given: Volume =15 mL Mass of CD cleaner= 11.775g

Q: Four balloons are each filled with a different gas, each ha

A: We know that in two medium one have less density and one have more density then higher density layer…

Q: How many grams of mercury are present in a barometer that holds 6.2 mL of mercury?

A: We have to calculate the mass of Hg.

Q: Edmund Hillary became the first documented mountaineers to summit Mt E it. Given that Everest is…

A: 0.18 is the correct answer. B option is correct.

Q: An air bubble has a volume of 0.490 L at 17 ∘C∘.What is the volume, in liters, at 6 ∘C∘, if nn and P…

A: Given: Initial volume = 0.490 L Initial temperature = 17 oC And final temperature = 6 oC

Q: . In a mixture of the gases oxygen and helium, which statement is valid?(a) The helium atoms will be…

A:

Q: 2 NH3 ---> N2  +  3 H2 74.9 L of liquid ammonia (NH3) has a density of 0.73 kg / m3 , is decomposed…

A: Answer :- 141 L H2  Volume of Hydrogen gas formed = 141 L…

Q: Ionic compound A has both the cation and the anion in FCC. Ionic compound B has the cation in BCC…

A: density of unit cells:

Q: (Q30) How many times faster will gaseous ammonia (NH3) gas effuse than will gaseous pentachloride…

A:

Q: 6. The pharmacy believes that the reaction, when it occurs in the stomach, may have an unintended…

A: In continuation of the earlier problem 5, the no. of moles of CO2 = 0.167mole

Q: How much N2 is required to fill a small room with a volume of 960 cubic feet (27,000 L) to 745 mm Hg…

A:

Q: 100.0 mL of water at 25 °C is added to a sealed 4.0 L Erlenmeyer flask. What is the volume of water?

A: Given : 100.0 mL of water at 25 °C is added to a sealed 4.0 L Erlenmeyer flask.

Q: 3. Why is the density of a gas much lower than that of a liquid or solid under atmospheric…

A: Density of a substance is defined as its mass per unit volume.

Q: From your readings, answer the following as briefly as possible: 1. Describe the characteristic…

A: Solid, liquid and gases are main three state of matter. Solids has definite volume and shape. Liquid…

Q: (Q31) Given that a sample of krypton gas effuses in 18.4 minutes, how long (in minutes) will it take…

A: Solution - According to the question - Given - m1 = Mass of krypton  = 83.79 m2 = Mass of oxygen  =…

Q: On a cold 14.3 °C day, a basketball has deflated to a volume of 6.97 L.  To what temperature, in oC,…

A: The gaseous state is the state of matter with least intermolecular force of attraction between…

Q: The density of ammonia gas under certain conditons is 0.625g/l. Calculate the density in g/cm^3

A:

Q: Liquid nitrogen is obtained from liquefied air and is used in-dustrially to prepare frozen foods. It…

A: Temperature is a physical quantity which tells about how hot or cold body it. It can be measured on…

Q: How fast will nitrogen gas travel if carbon dioxide moves at a rate of 9.56 x 1026 molecules per…

A: According to Graham’s law, if a mixture contains two gases, then the rate of effusion at constant…

Q: 6) Which of the following is not part of the kinetic-molecular theory? A) Atoms are neither created…

A: For question 6, we have to find the statement that is not part of the kinetic molecular theory. For…

Q: During World War II, physicists developed methods to separate the uranium-235 and -238 isotopes. One…

A: Isotopes: The atoms of the same element, when have a different number of neutrons, are called…

Q: What is the relationship between the object density, the liquid density, and the tendency of the…

A: If,  density of object > density of liquid Then object will sink in water.

Q: (Q31) Given that a sample of krypton gas effuses in 22.7 minutes, how long (in minutes) will it take…

A: Graham's law of effusion of gases : rate of effusion of A ÷ rate of effusion of B = √( molar mass of…

Q: 1. As temperature increases, gas particles move and get i :: faster :: slower :: the same :: farther…

A: Given: As temperature increases, gas particles move ____ and get ____.

Q: 2, On a cold day an individual takes in a breath of 375 mL at 745 mm Hg and -10oC. What is the…

A: Volume of air in lungs on cold day = Vc = 375 mL Pressure of air in lungs on cold day = Pc = 745 mm…

Q: Which of the following statements is inconsistent with Kinetic Molecular Theory?   a. Particles in…

A: Assumptions of Kinetic-molecular theory- In a gas molecules are in constant random motion. Gas…

Q: Benzoic acid, C6H5COOH, melts at 122 °C. The densityin the liquid state at 130 °C is 1.08 /cm3. The…

A: a) Since more is the density of the molecule, lesser will be the Volume of molecules for same mass.…

Q: gases is false? A) Gases are highly compressible. B) Distances between molecules of gas are very…

A: Gases have Indefinite volume and Indefinite shape. Gaseous molecules have very large distance…

Q: Which relationship(s) can be modeled with the following graph? Select all that apply. y X V vs. T;…

A: From ideal gas law equation  PV = nRT ; where P is for pressure, V is for volume, n is number of…

Q: An engineer pumps air at O'C into a newly designed piston-cylinder assembly. The volume measures…

A:

Q: Which of the following gases will move the fastest at 25.0 °C?   Select one: a. He b. none of these,…

A: Given answer of choices,   a. He   b. none of these, all move at the same speed.   c. H2O   d. O2…

Q: If a 1.00 L beaker of water was converted into water vapor at 100 C under standard atmospheric…

A:

Q: 6. A pipet delivers 9.98 g of water at 19 °C. What volume does the pipet deliver?

A: Here, we need to answer question number 6 -

Q: 11) Dentists sometimes use laughing gas (N2O) to keep patients relaxed during dental procedures. A…

A: Consider the given information about the laughing gas is as follows; Volume (V) = 57.3 L Pressure…

Q: A balloon is blown up to a volume of 0.50L at 22°C. The balloon sits in a hot car, which reaches…

A: Given: The initial volume of the balloon = 0.50 L, The initial temperature of the balloon = 22 oC,…

Q: Volume of a Gas Natural gas provides 25% of U.S. energy. The volume of a gas varies inversely with…

A: As Given volume of gas is directly proportional to the temp. and inversly to the pressure so, V=K…

Q: A soda bottle is flexible enough that the volume of the bottle can change even without opening it.…

A: Given,  If you have an empty soda bottle (volume of 2.0 L) at room temperature (21 °C), what will…

Q: 2 NH3 ---> N2  +  3 H2 74.9 L of liquid ammonia (NH3) has a density of 0.73 kg / m3 , is decomposed…

A: The quantities which come across during the scientific studies are named as physical quantities. The…

Q: 8. What would the volume of a gas be at -150°C, if it had a volume of 693 mL at 45°C?

A: Charles law: At constant pressure, the volume occupied by given mass of the gas is directly…

Q: 1. Using a glass syringe, a scientist draws exactly 25.5 cm of dry oxygen at 20.0 C trom a metal…

A: #1: Given the pressure of the syringe remains constant and equal to the atmospheric pressure. At…

Q: A pipet delivers 9.97 g of water at 19°C.What volume does the pipet deliver?

A: Given : mass of water delivered = 9.97 g

Q: On average, a scuba tank provides 670 L of useful air. If a resting breathe has a volume of 0.50 L,…

A: Scuba tanks contain  useful air= 670 L Volume of resting breathe = 0.50 L   Using Unitary method,…

Q: Pure oxygen diffuses through an aperture in 224 seconds, whereas a mixture containing 80% oxygen gas…

A:

Q: Calculate the Celsius temperature of 455 ml of a gas if we know that gas takes up 624 ml of space at…

A: Since we know PV = nRT  where P = pressure  V = volume  n = moles  R = constant  T = temperature in…

Q: A sample of neon gas occupies 75.0 mL at 25°C. What is its new volume, in milliliters, if the…

A:

Q: A 2.5 L helium balloon is filled at a florist's shop. If the temperature inside the shop is 68°F,…

A:

Q: A sample of Nitrogen gas occupies a volume of 31.9 ml at 86.8°C. What temperature in °C will it need…

A: Please find your solution below : Charle's law states that when the pressure is held constant, the…

Q: 1. Which of the following terms means chaos? A. Gas B. Liquid C. Plasma D. solid 2. Which particular…

A: There are there states of matter: solid, liquid and gas. Fourth state is plasma.

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.