This radiation is emitted simultaneously. Which is the most energetic? А. A wave length of 234 nm В. A frequency wave 3.59 x 109 Hz С. A visible red wave D. A wave with a wavelength of 3.18 x 10 -8 m E. A wave with an energy of 3.95 x 10 -18 J

Q: The molar heat of combustion, A Hi, of sucrose is -5643.4 kJ mol-1. If 0.250 moles of sucro: reactor...

A: □Hrxn = n × □Hc  =0.250 × (-5643.4) = -1410.85 kJ □Ssurr. = -□Hrxn/T

Q: What are the four most common elements in living organisms? (Table 2.2) Read the chapter summary for...

A: There are various elements present in living organism .

Q: 26. Calculate the empirical formula from the information given below: a. 63.5% Fe; 36.5 % S d. 25.9%...

A: Calculation of empirical formula:   As per our guideline we have to answer first three questions onl...

Q: エ

A: Given compound is :  What is the name of the alkene where the compound below was produced through O...

Q: A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reducti...

A: The addition of electrons or decreases in the oxidation state is known as a reduction reaction and t...

Q: Given: H2(g) + 1/2 O2 (g) —> H2O (l) Delta H = -285.8 kJ   Combine this equation with equation 1 a...

A: For combustion reaction , we need The compound ( or element ) and Oxygen as reactants, because combu...

Q: Calculate the pH of rainwater in equilibrium with atmospheric CO2, knowing that for the present-day ...

A: We need to calculate the pH of rainwater.

Q: Part A Calculate the equilibrium constant for each of the reactions at 25 °C. Pb* (aq) + Zn(s) → Pb(...

A:

Q: If you mix together 5 drops of NiSO4 and 5 drops of Ba(NO3)2 a precipitate forms. Write the   equati...

A: Spectators ions  are those which are present in both side ie reactant and product side which are can...

Q: d. What is the rate constant for set up 1? Indicate the appropriate units. The second set up was als...

A: On comparison of set up -2, and 4  r4r2 = 2.83 * 10-3 1.41* 10-3 =21 =(0.540.27)m (0.330.33)n       ...

Q: Sodium phosphate is added to a solution that contains 0.0067 M aluminum nitrate and 0.015 M calcium ...

A: Solution - According to the question - Given -  concentration of Al3+ = 0.0067M 0.0067M × [PO43-] = ...

Q: Which of the four resonance structures for the sulfite ion below is the least favoured? Remember to ...

A: A resonance structure became more stable when it has more no of covalent bond and has less no of cha...

Q: Explain the Steroids Structure?

A: Steroids can be defined as an anti-inflammatory medicines that are helpful in treating a range of co...

Q: Give the IUPAC name of the alkyne that produces only propanoic acid (CH3CH2CO2H) when treated with o...

A:

Q: OCH3 CH3 CH3CCH3 CH3CH-0- ÓCH3 CH3 CH3 SCH3 -SCH3 CH3CH2CHCHCHSCHCH3 ČH3 ČH3 SH -CH3 `NO2

A:

Q: Which alkene has (E) configuration? а. b. c. d.

A: E–Z configuration is the method of describing the absolute stereochemistry of double bonds.

Q: Draw the resonance structures of the next molecule starting with the one indicated by the curved arr...

A:

Q: Identify each type of titration curve. Note that the analyte is stated first, followed by the titran...

A: The graphical representation of change in Ph of the solution under study during the course of titrat...

Q: mL

A:

Q: Aresearcher raises the temperature from 56.8 to 69.6 "C and finds that the rate of the reaction doub...

A:

Q: A chemist dissolves 883. mg of pure sodium hydroxide in enough water to make up 60. mL of solution. ...

A:

Q: How do you account for the observed solubility of naphthalene and sodium chloride in water and in  e...

A: As we know like dissolves like, same applies in solutions. A substace having zero dipole moment is c...

Q: Which of the following pairs of reactants and reactions is INCORRECT? a. Lucas reagent : Nucleophi...

A: Which of the following pairs of reactants and reactions is INCORRECT?

Q: 15. Briefly explain the application of the functional group "amides in health and medicine" and incl...

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

Q: Explain if there was a leak at the buret stopcock if it would increase, decrease or have no effect o...

A: If there is any leak at the buret stopcock, then it will affect the deliberation rate of the solutio...

Q: Calculate the total mass, in kilograms, of arsenic in the lake that the company will have to remove ...

A: Sample of water : 178.9 ng Density of water : 1.0 g/cm Volume of water : 0.350 km3  1) First of all ...

Q: button e app.101edu.co Question 6 of 10 What ratio of CH NH, to CH3NH is needed to prepare a pH 9.70...

A:

Q: a) How much mL of 20.0% w/w NaOH with a density of 1.22 g/mL is needed to make a 500-mL solution of ...

A: The formality of a solution is a concentration term similar to molarity and it is defined by the num...

Q: At constant pressure, a sample of Hydrogen gas was changed to 6.0 L and 115 K, if the initial temper...

A:

Q: a. Cycloheptyl methyl ether from cycloheptene and any other necessary reagents. 1-chloro-2-ethoxy-4-...

A: Organic reaction mechanisms:

Q: 400 ml. + How wok ld you Sieque of fcom a 5.0M ach How many grans of Nicl is veguiced to prepeš. 250...

A: a) Given :-  Molarity of NaCl stock solution= M1 = 5.0 M  Volume of NaCl dilute solution = V2 = 400...

Q: pH of farm field Measurement pH 1 7.05 2 6.89 6.92 4 5.88 6.34 6.45 7.10 8. 5.89 6.58 10 6.71 4) A s...

A: The formula to calculate average of measurement is :-  Average = sum of each measurements ÷ number o...

Q: The distribution ratio of iodine between an organic solvent and water is 8.00. If 50.0 mL of 0.100 M...

A:

Q: The standard enthalpy of combustion, A H: , of graphite is -393.51 kJ mol-1. Calculate the change in...

A:

Q: 1) Explain with the help of equations the function of the base in the hydrolysis of benzonitrile. C.

A: The base hydrolysis of benzonitrile produces benzoic acid.

Q: The molar heat of combustion, A H, of methane is -890.7 kJ mol-1. If 0.0500 moles of methane is comb...

A:

Q: If 60.0 L of nitrogen is collected over water at 40.0°C when the atmospheric pressure is 760.0 mm Hg...

A:

Q: A 350.0 mL buffer solution is 0.150 mol L-lin HF and 0.150 mol L-lin • Part A NaF. Ka(HF) = 6.3 x 10...

A: Given data: Ka = 6.3 × 10-4 pH = 4.0

Q: ne percent yield? (At.

A:

Q: A 75.0-mL volume of 0.200 mol L-1 NH3 (Kp = 1.8 × 10–5) is titrated with 0.500 mol L-1 HNO3. Calcula...

A:

Q: Calculate the percent by mass of CH3COOH in vinegar (%). Number answer only, do not write units. Do ...

A: To determine the percent by  mass of acetic acid in vinegar, we must first determine the molarity of...

Q: When 1-butene reacts with bromine in an aqueous solution, the major product is 1-bromo-2-butanol. Wh...

A:

Q: 2N2O5(g) → 4NO2(g) + O2(g) rate constant, k=2.8×10−3  sec−1. If the initial concentration of [N2O5] ...

A:

Q: Calculate how many molecules of glucose would be present in our hypothetical and spherical eukaryoti...

A: No of particles of a sample is in 1mole is given by Avogadro's no  that is equal to 6.022*1023 thus ...

Q: Nitrogen and hydrogen react to form ammonia, like this: N2(g)+3H,(9) 2 NH3(g) The reaction is exothe...

A:

Q: Styles Editi Please calculate the final maltose concentrations for the tubes you created today. Volu...

A: To Calculate the maltose concentration in diluted solution , we would use given equation. 

Q: Fill in the missing chemical formulae in the tables below. acid conjugate base base conjugate acid H...

A: Fill the missing chemical formula in the table given above ---

Q: How many atoms are there in a 0.500-L of water given that its density is 1.00 g/mL? b) An oxygen ca...

A:

Q: Given: Solubility product for a series of hydroxides: BiOOH Ksp = 4.0 x 10^-10 = [BiO+][OH-] Be(OH)2...

A:

Q: What mass in grams of KIO3 is needed to convert the copper in 0.2444 g of CuSO4 .5H2O to Cu(IO3)2? ...

A: Answer:- We determined mass of KIO3 By using Stoichiometry of chemical reaction .

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.