iven that the density of air at 740 Torr and 27C is 1.146 g/L, calculate the mole fraction and al pressure of nitrogen and oxygen assuming that (a) air consists only of these two gases, ir also contains 1.0 mole percent of Ar.

Q: A certain metal with molar mass of 54.55 g/mol crystallizes to form a face- centered cubic unit cell…

A: Answer: Density of a unit cell is: d=Z×MNA×a3 Here: d=density of the unit cellM=Molar mass of the…

Q: Describe the types of energy involved when boiling an egg in a pot of water.

A: Eggs are made up of large number of protein molecules. Now small constituent amino acids are joined…

Q: A hypothetical element with atomic radius of 100 pm forms a cubic unit cell that has an edge length…

A: Given ,  Atomic radius of an hypothetical element  R = 100 pm  And edge length of cube is 441 pm

Q: Solve the attached Problem.

A: The given reaction is represented as follows:

Q: Please help me show all the work as I will be using this to study, double and triple check your…

A: Temperature change can be calculated as follows:

Q: 1. The magnitude of any enthalpy change depends on the conditions of temperature, pressure and state…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A gaseous mixture of Oz and N2 contains 37.8 % nitrogen by mass. What is the partial pressure of…

A: Given :-  percent composition by mass of N2 = 37.8%  total pressure of gaseous mixture = 765 torr…

Q: Prepare a table in which the rows are: length, area, volume, mass, and time. Make two columns, one…

A:

Q: Organic compounds that contain large proportions of nitrogen and oxygen tend to be unstable and are…

A: Rate constant at 73.2 oC , k = 0.000290 s-1 Rate constant at 158.6 oC , k=? s-1  Temperature = T1 =…

Q: Solve the attached Problem.

A: Since the problem has been solved, we are providing you the mechanism for the same. Tert-BuO- is a…

Q: Solve the attached Problem.

A: The given reaction is the reduction of alkynes to trans alkenes in the presence of liq. NH3. The…

Q: 8. If you add enough acid, you will convert all carbonate ions in solution to carbonic acid (H₂CO3).…

A: ∆G° = ∆H° - T∆S°  T = standard temperature= 298 K  1 KJ = 1000 J

Q: The following reaction takes place: A,B = 2A +B + heat. If 4.00 moles of A,B is added into a 1.00 L…

A: The given reaction in equilibrium is: A2B ⇌ 2A + B + Heat  Given 4.00 moles of reactant A2B is added…

Q: 12. How does the difference in stereochemistry between these two starting materials affect the type…

A: leaving group and hydrogen must be opposite to each other .

Q: If the pH of a solution is 8.85, what is the concentration of hydroxide ions in the solution?

A:

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A:

Q: Table 3. Heat of neutralization data and calculations Sample 1 Sample 2 [1] Volume of HCI (mL) 50.0…

A:

Q: Questions 34 - 36 concern the following types of graphs: A B Select from A to D the graph that best…

A: To identify the graph we have to see the rate expression for the reaction . From the rate expression…

Q: A liquid that is almost entirely water is reported to contain 125 ppb phenol on a mass basis. a)…

A:

Q: Solve the attached file?

A:

Q: Which of the following statements does NOT explain why KHP is a suitable primary standard in an…

A: KHP is a suitable primary standard in an acid-base titration. Here we have to find out the…

Q: Consider two different spherical protein molecules, where the larger protein has a surface area that…

A: Given: Larger protein has surface area greater than smaller protein by 16 times To find: Relative…

Q: What is a chemical reaction equilibrium? How can they be used? Why are they important in chemistry?

A: To define: chemical reaction equilibrium along with its uses and importance.

Q: - 9. Which of the following would produce a precipitate when equal volumes of 0.5 mol/L aqueous…

A: Note: Since you have posted multiple questions, we will provide the solution only to the first…

Q: Part A Calculate the standard enthalpy change for the reaction where the heats of formation are…

A: Standard enthalpy of reaction is given by: ∆Hrxn0 = ∆Hf0(Products) - ∆Hf0 (reactants) ∆Grxn0 =…

Q: Please place answers in the boxes so I won't be confused.  Thank You!!

A: The formation of conjugate acid takes place when any base undergoes the process of protonation (gain…

Q: Questions 25 - 27 concem the following types of bonding which can exist between particles. A…

A: Hydrogen bonds occur only when there is a dipole moment in the molecule i.e. one atom is…

Q: Convert the following gauge pressures to absolute values if the barometric pressure is 757 mm Hg.…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Solve the attached Problem.

A: Given reaction,

Q: (e) ZI

A: As per the guidelines I am allowed to answer one question at a time.  Please re upload the rest. And…

Q: 5. Laboratory gowns can be useful to protect us (a) Chemical spilling on your face (b) Chemicals…

A: Laboratory safety precaution are must to avoid the incidence in the laboratory.

Q: Water has a density of 62.4 Ibm/ft3. How much does 2 ft3 of water weigh (a) at sea level and…

A:

Q: b. An orange contains 71.00% of the recommended daily average of vitamin C (60.0 mg/day). What…

A:

Q: How many of each of the following are contained in 100 g of CO2 (MW=44)? a) mol CO2 b) Ibmol CO2 c)…

A:

Q: 30. Based on the given data, which of the subatomic particles is the lig Particle Charge Mass (kg)…

A: Atomic number = number of proton, Atomic mass = no. of proton + no.of neutron

Q: Solve the attached Problem.

A: NBS is a brominating agent that add Br to the allylic position. Diels alder reaction is (4+2)…

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.