a) What is the wavelength in nanometres of light emitted by the helium ion (He2+) when it captures an electron in its 1s shell?

Q: Jsing the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy…

A: CH4(g) + 2O2(g) --> CO2(g) + 2H2O(g)

Q: least expensive form of carbon abatement (putting less CO2 into the atmosphere) is A, nuclear power…

A: Abatement means to reduce or to decrease. As it is asking about least expensive form of carbon…

Q: The intramolecular Aldol condensation of 2,6-heptanedione with basc may produces two possible…

A: Intramolecular reaction means within the molecule the reaction takes place. In Aldol reaction,…

Q: 6. For the reaction Cu(s) = Cu(g) AH° = 81,730 – 0.47T – 0.731x10³T? AS° = 34.94 – 1.08 log10T -…

A: Given-> ∆H° = 81730 - 0.47 T - 0.731× 10-3T2 ∆S° = 34.94 - 1.08logT - 1.46 × 10-3T

Q: molecular weight of poly vinyl chloride

A:

Q: Write each quantity in scientific notation. 1,234 g 0.000162 m 5,244,000 L 0.00562 g 44,000 km

A: For writing scientific notation move decimal point right or left to arrange one digit to the left of…

Q: [1] LIAIH C. N. [2] H20 [11 LIAIH(OC(CHa)ala [2] H20 d. CI

A:

Q: Name the first nine straight-chain members of the alkene series.

A: First nine alkenes are

Q: Every agent is rational in an unobservable environment. (True/False) Explain your answer

A: Every agent is rational in an unobservable environment. The Answer   FALSE.

Q: Ksp for this compound? er should be entered with 3 significant figures; do not enter units; give…

A: It is a ACl2 type salt.  So, Solubility equilibrium is as ACl2(s) ----> A2+(aq.) + 2Cl-(aq.)…

Q: Indicate the concentration of each ion present in the solution formed by mixing the following.…

A:

Q: The value of Kc for the the following reaction is 0.600 at 487 K. N,0,(g) 2NO, (g) 4

A:

Q: The acid dissociation constant K, of carbonic acid (H,CO,) is 4.5 x 10 '. а Calculate the pH of a…

A:

Q: Using the periodic table for this course (Chem 100 Periodic Table.pdf ), which substance contains…

A:

Q: If the core electrons were 100% effective at shielding the valence electrons from the nuclear charge…

A: GIVEN:- If the core electrons were 100% effective at shielding the valence electrons from the…

Q: Where did the last phase of H3O+ come from? Because quenching work is needed to make it OH at the…

A: GIVEN:-

Q: Metallic manganese can exist in the y form (fcc, cell dimension = 3.86 Å) and the & form (bcc, cell…

A:

Q: Look at the reaction below and state which direction the reaction would shift: You remove mercury…

A:

Q: Round each number to three significant figures. 25,401 1,248,486 0.001265982…

A:

Q: Using Hess's Law, calculate for the change in enthalpy of the given reaction. Calculate ∆ H for…

A: Given,  2NO2 (g) + 2NO(g) + O2 (g) →2N2O4 (g) ∆H1 = −228.54 kJ4NO(g) + 2N2O(g) + 5O2 (g) →4N2O4 (g)…

Q: Convert each number to standard notation. 3.4x108 5.8220x10-5 3x102 6.860x10-8

A: Standard notation is the normal way of writing numbers as we generally use it. In this we neither…

Q: Mg + O2 -------> MgO Na2CO3 -------> Na2O + CO2 C3H8 + O2 -------> CO2 + H20

A: Note : As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost…

Q: Calculate the volume of a unit cell of Nickel in nm3. The volume of unit cell of Nickel is…

A:

Q: 4.) The dissociation energy of a carbon-bromine bond is typically about 276 KJ/mol. What is the…

A: Given, the bond dissociation energy of a carbon-bromine bond = 276 kJmol We have to find the maximum…

Q: 2.2.91 moles of silicon dioxide (SiO) are dissolved in a 1.93 kg aqueous solution. What are the ppm…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Calculate the potential of the solution in the titration of 50.0 mL 0.100 M Fe2+ in 1.00 M HClO4…

A:

Q: II. Determine the type of nuclear transmutation shown by each of the following reactions: alpha…

A: Nuclear reactions are broadly classified in three categories which are :  1.) Beta decay : In this…

Q: High-density polyethylene (HDPE) is opaque while low-density polyethylene (LDPE) is transparent.…

A: Let's discuss about the opaqueness of HDPE and transparent nature of LDPE according to the question.

Q: a) What is the wavelength in nanometres of light emitted by the helium ion (He2+) when it captures…

A: The wave length of light is

Q: Calculate the equivalent mass of each of the following acids; a) HC2H3O2, b) KHCO3, c) H2SO3.

A:

Q: Which of the following best describes the O B. Fe3*] (3 x [OH]) OC Fe3+] + (3 x [OH"])3 OD…

A: Solubility equilibrium is as follows  Fe(OH)3(s) -----> Fe3+(aq.) + 3 OH-(aq.)

Q: A mixture of sodium carbonate and sodium bicarbonate is dissolved in water and treated with 0.100 M…

A: For the mixture of Sodium Carbonate and Sodium bicarbonate With Phenolphthalein end point, the…

Q: 3. The following analyses were performed for a water sample at 25 C pH [Ca Total alkalinity Total…

A: We have find out the Langelier Saturation Index for this water and also find out this water has the…

Q: A certain amount of glucose (C6H1206) reacted through a combustion reaction using sufficient amount…

A: First we would write a balanced chemical equation for combustion of glucose.  Then using given…

Q: Naming Alkynes

A:

Q: Indicate whether EACH statement is true or false A. true A buffer is an aqueous solution composed of…

A: Given statements: A buffer is an aqueous solution composed of two weak acids. A buffer can absorb…

Q: Why should you know the composition of the weighing form? a. So that it can be washed properly b.…

A: Composition of the compound tells about the mass .

Q: yas Ul uikHoWh mólécular mass was allowed to effuse through a small opening under constant pressure…

A:

Q: Please answer this immediately. Thank you!

A: Functional group of the molecule shows an characteristic property. Generally these are the groups of…

Q: Complete the following reactions: CH,CH,I (1) NaOEt, ELOH

A: Given reaction is : Complete the reaction and give the major product = ?

Q: Which acids are not considered polyprotic? Select all that apply. H;PO3 HNO2 O H2SO3 HBr HE O HCIO4…

A:

Q: Rank the following from greatest molar solubility (4) to the least molar solubility (1). Assign a…

A: Let us calculate the solubility and then further we will discuss its order.

Q: Which of the following mixtures has the highest buffering capacity? O A. 0.75 M H3ASO4/0.75 M H2ASO4…

A:

Q: 1. Identify A-E in the scheme below: CH:(CH2),Br B NaH LDA A Isobutyl bromide 1) DIBAL-H 2) H30* E.

A: Initially reactant is given and we have to determine multiple products at various steps of provided…

Q: The pyridinium ion (C5H4NH*) is a weak acid (Ka = 5.60 x 10-6). Calculate the pH of a solution that…

A: Given that, the pyridinium ion is a weak acid. The Ka of it is Ka = 5.60×10-6. 3.7 mL of 0.167 M of…

Q: Indicate whether the following statements are true or false: A reaction that is spontaneous in the…

A: Spontanity of a reactions describes the ease of a reaction to occur.

Q: What is the ΔHfus of ethanol (46.06 g/mol) which has Kb of 1.99 and freezes at -117.3 °C?

A: Ethanol freezes at - 117.3◦ C . The Kb of ethanol is 1.99 . We have to calculate the ∆Hfus of…

Q: A teacher adds a small amount of a substance to an erlenmeyer flask while demonstrating titration.…

A: A teacher adds small amount of a substance to an erlenmeyer flask while demonstrating titration.Lets…

Q: The base protonation constant K, of lidocaine (C„H2,NONH) is 1.15 × 10 °. 14 Calculate the pH of a…

A:

Q: Predict the major product of the following reaction. Br: EINH O cis O syn O trans O anti

A:

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.