26. The element copper has naturally occurring isotopes with mass numbers of 63 and 65. The relative abundance and atomic masses are 69.2% for mass = 62.93 amu and 30.8% for mass = 64.93 amu. Calculate the average atomic mass for copper.

Q: 5. Which salt is least soluble at 40°C?

A: Solubility curve-

Q: 10. What is the mass number of a helium atom that has two protons and two neutrons?

A:

Q: 9.00g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Given data 9.00g of a certain Compound X molecular molar mass of 60.g/mol   Co2=13.20g water=5.40g…

Q: The van der Waals equation of state was designed (by Dutch physicist Johannes van der Waals) to…

A: Given that The van der Waals equation of state for real gas as  (P+an2V2) (V-nb) =nRT where P =…

Q: What is the pH of 8.1 x 10-5 M HCIO4 solution? a) 4.09 Ob) 9.91 Oc) -4.09

A: pH = - log[H+]

Q: 6. Draw the resonance structures for the following compound. li a) DAN b) + c) d) :0% Ô H

A: Here, we have to draw the resonance structures of the given compounds.

Q: Benzyl acetate is a pleasant-smelling ester found in the essential oil of jasmine flowers and is…

A: Here we are required to find the reagent used to carry out the reaction.

Q: 22. What is the OH-ion concentration in a 5.2 x 10-4 M HNO3 solution? A) 1.9 × 10-11 M B) 1.0 × 10-7…

A: Given -> Concentration of HNO3 = 5.2 × 10-4 M = [ HNO3]

Q: What molecular geometries does VSEPR predict for the carbons in acetone (CH3)2CO? Choose all that…

A:

Q: LOTS CF3CO₂Na CF3CO₂H H H (+/-) major CF3 H H (+/-) minor

A: The two products of the given reaction are a result of a SN1 reaction and an E1 reaction taking…

Q: Balance the following chemical equations and write the net ionic equation for each reaction: “If…

A: Balanced chemical equation:  balanced chemical equation is the reaction in which number of atoms of…

Q: Click on any sets of protons which will generate a quintet, assuming the coupling constants are…

A: The structure of the given organic compound is Identify the set of protons which will generate…

Q: 8 100 D 4000 T n 3000 2000 What can be said about this unknown based on its IR spectrum? The unknown…

A: Here we are required to find the functional group present in the compound

Q: Consider the reaction: 2 Al(OH)3 + 3 H2SO4 → Al2(SO4)3 + 6 H2O. How many grams of Al2(SO4)3 are…

A:

Q: Which of the following element has the largest atomic radius? Ru, Tc, Cr, Mn

A: Atomic radius: The distance between the nucleus and the outermost electron is known as the atomic…

Q: Excesdrin headache pain relief extra strength contains 250mg of acetaminophen, C8H9NO2 per tablet.…

A: Here we are required to find the number of molecule of acetaminophen present in the tablet

Q: How did you know HNO3  is [H+ ] And not [OH-] ?

A: Chemical compounds are of three types.  These are acids, bases and neutral compounds.  Acids have a…

Q: Use the table on the information page to predict if a reaction will occur when nickel metal and…

A: Yes nickel metal reacts with manganese cholaride to produce solid manganese and nickel chloride.…

Q: Provide the correct IUPAC name for HBrO₂(aq).

A: The given acid is oxyacid because it consists both oxygen and hydrogen.

Q: Calculate the molar mass of each of the following compounds:  10. C6H12O6

A: Molar mass of a compound is an addictive property of each elements which present in molecules

Q: What is the number of formula units in a 1.10 mol sample of CaO?

A: Given, Number of moles of CaO = 1.10 mol Number of formula units = ? Note: 1 mol of CaO contains…

Q: The following two compounds are constitutional isomers. Identify which of these is expected to be…

A: Acid is a substance which can easily release H+ ions, while base is a substance which can easily…

Q: 7. Place the labels chemical symbols, atomic number, and mass number in the shorthand notation…

A: -> The number at down side in symbol is always atomic number . -> The number at upper side in…

Q: % 100 80 60 40 20 0 Percentage of undecayed nuclei About 11 0 10 20 30 40 50 t = 100 s N = 1 ➜t(s)…

A: Half life is the time during which the half of the radioactive material ( nuclei) get destroyed.  So…

Q: 12.16 Identify each of the following compounds as an aldehyde or a ketone: O a. H CH3 O || b.…

A: An aldehyde is an organic molecule that contains a functional group with the formula R-CHO.…

Q: Cyclopropane (CH2)3 was burned to carbon dioxide and liquid water, as represented by the equation…

A: Answer:- This question is answered by using the simple concept of Hess law of constant heat…

Q: b. Assuming that V for both graphite and diamond are independent of pressure, show that the…

A: Here we have to derive above relationship-

Q: Part C Predict the rate of change in the concentration of N₂O over this time interval. In other…

A: Given : time = 13 s

Q: 24. The dose of AUGMENTIN oral suspension for a patient is 5 mL b.i.d. Each 5 mL of suspension…

A: Given that,  The dose for patient = 5 mL And number of times taken in a days  = 2 times  (b.i.d.)…

Q: Draw the major organic product. (h) O 1. LDA 2. PhCHO (1 eq) Q KOH EtOH, A N HCI, H₂O A 1. Me,Culi…

A: Given some sequences to complete this .. In first question Robinson annulation reaction is the main…

Q: Suppose the reduction of nitric oxide proceeds by the following mechanism: elementary reaction H₂(g)…

A: Recall the given reactions,               H2 g  +  2 NO g  →  N2O g  +  H2O g…

Q: Br has the biggest priority because it has the biggest atomic number, and then it's Cl and then F,…

A:

Q: 3. If you use 10.0 mL of the Sodium Carbonate solution and an excess of Calcium Chloride, how many…

A: Answer-3 This question is based on the concept of limiting reagent. Limiting reagent is the reactant…

Q: a. b. C. d. 18. How many electrons, protons, and neutrons are in each of the following? c. Cobalt-58…

A:

Q: Based on your answer to parts A - C, draw the correct regio- and stereoisomer of the product in the…

A: For the given E2 reaction, we have to answer: 1. Name of the substrate 2. Name of the product 3.…

Q: The activation energy for a reaction is 509.8 kJ. The rate constant at 50.9ºC is equal to 1.39 x…

A:

Q: What would be different about TLC experiment if TLC the plate was not terminated in Si-OH groups,…

A: TLC means thin layer chromatography. Here, one phase remains fixed. It doesn't move. It is called…

Q: patch it is ren VENTOLIN HFA inhaler delivers 75 mg of albuterol sulfate suspension for inhalation…

A:

Q: How many atoms of oxygen are in 2.7 moles Mg(NO3)2? Report your answer with the correct number of…

A: The number of oxygen atoms there are = 9.8e24  atoms

Q: 90.0 of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a…

A:

Q: One mole of sodium metal is added to water. How much work (in kJ) is done by the subsequent reaction…

A: given reaction of sodium metal with water  at T = 25 degree Celsius find work done

Q: Identify the oxidizing and reducing agent Cl2 (g) + H2O (l) -> HClO (aq) + HCl (aq)

A: The given redox reaction is   Cl2 (g) + H2O (l) -> HClO (aq) + HCl (aq) Identify the oxidizing…

Q: can you answer the other sub parts

A: To calculate the pH of the titration mixture after the addition of 33 mL and 44 mL of the titrant.…

Q: bond angle? tetrahedral trigonal planar linear octahedral

A: Which one of the following  is correct answer

Q: Part 1: Make Calibration Standards Data and Calculations 1. Mass of the NaCl added to the 100-mL…

A: The solution B , C and D are made by diluting solution A. So we can use dilution law to calculate…

Q: Provide a systematic name of the following compound: Systematic name: 4-ethyl 3-methyl octane…

A:

Q: Which of the following elements have the least electron affinity? P, Ne, Se, As

A: Electron affinity is defined as the amount of energy released when an electron is added to a neutral…

Q: Part 2: 1. 25.2 mL of a 0.100 M solution of sodium hydroxide is mixed with 50.5 mL of 0.0500 M…

A:

Q: According to the label on a bottle of salad dressing, the volume of the contents is 0.362 liter (L).…

A:

Q: Average absorbance, Molarity of Fe(NO₂)), 0.2M Volume of Fe(NO₂)) = 5.00mL Moles of FeMolarityx…

A: The balanced equation for the equilibrium reaction is: Fe3+(aq) + SCN-(aq) ⇌ Fe(SCN)2+(aq) ; K = ??…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.