What is the frequency of light (in THz) for a photon with a wavelength of 707.0 nm? (Remember that 1 nm = 10-9 m, 1 THz = 1012 Hz and that the speed of light is 2.998×108 m/s) Your Answer: Answer units

Q: The graph shows   A)  Adding HNO3 from buret to HClO in flask   B)  Adding NaOH from buret to NH3 ...

A: the graph starts approximately from pH 10 which is our solution pH before the titration. it indicate...

Q: ACCURATE ERRONEOUS IMPOSSIBLE 2,2-dibromo-2,3- nonanediol ethene

A: For the IUPAC name,  rules are there and when these rules are not followed, it will be wrong naming.

Q: why pyrazole is more basic than pyridine?

A: We have to tell why pyrazole is more basic than pyridine. 

Q: MISSED THIS? Watch KCV 15.8, IWE 15.9; Read Section 15.8. You can click on the Review link to access...

A:

Q: For the substitution reaction. Draw the structure of the intermediate that forms in the rate determi...

A:

Q: A 2 L sulfuric acid solution containing 320 g of H2SO4 per liter of solution has a density of 1.329 ...

A: Mass of solute in 2L of solution= 320*2= 640g of H2SO4 Moles of solute= mass /molar mass =640g/(98.1...

Q: 15 of 22 I Review | Constants | Periodic Table MISSED THIS? Watch KCV 15.8, IWE 15.9; Read Section 1...

A: Given data : Kc = 5.0 Initial concentrations [A] = [B] = 1.0 M Reaction : aA (g) + bB (g) ⇌ cC (g) W...

Q: If a reaction requires 0.243 moles of NANO3, how many milliliters of 0.592 M NANO3 are needed? ! mL ...

A:

Q: What volume of a .35M AgNO3 is required to completely react with 55 mL of a

A:   Balanced equation is 1 AgNO3 + 1 NaCl  ---> 1 AgCl +  1 NaNO3  To find the volume formula used ...

Q: An unknown volume of water at 18.2°C is added to 20.3 mL of water at 35.0°C. If the final temperatur...

A: Given :-  Volume of water at 35.0°C = 20.3 mL  Final temperature after mixing  = 23.5°C  To calculat...

Q: High-purity benzoic acid (CH;COOH; AHxn for combustion =-3227 kJ/mol) is used as a standard for cali...

A: The heat of combustion of benzoic acid is = -3227 kJ/mol The mass of benzoic acid is = 1.221 g The h...

Q: 64584@q.164 e. What is the approximate molar mass of the metal? (Use Eq. 4.) joules/g C g/mol

A:

Q: 2b) I dentify the nucleophillie carben atoms by drawing their formal charges. aiom bearng ane or mor...

A: In this molecule all the carbon atoms doesn't contain any formal negative charge. Therefore there is...

Q: Although we use pre-cast gels in this lab it is common practice to make your own polyacrylamide gels...

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please re...

Q: CN NC a) Br c) Br. Br DMSO CN CN Br. CN d) b) 50:50 mixture

A:

Q: What mass of NH4C1 can be dissolved in 195g of H2O at 70° C?

A:

Q: (c) The authors determined the C-C bond lengths and the Si-C-C bond angles in the acetylene ligand f...

A: We have to tell among the given two complexes which one has the stronger π back bonding with the Cu(...

Q: Which indication of relative acid strengths is incorrect? a) H2SO3>HNO3 b) H2SO4>H2SO3 c) HClO2>H...

A: Here we have to find out the order of acidity.

Q: Answer: 7. The level of ethyl acetate is determined in colchicines by headspace gas chromatography. ...

A: In the given problem the head space gas chromatography technique is used to determine the amount of ...

Q: Balance the following redox equations using the half-reaction method. Please help with a and e bc i’...

A: Balance the reaction:-  As2S3 + ClO3-  -----> Cl- + H2AsO4-  + S P -----> PH3 + H2PO2- Bi(OH)3...

Q: What NaCl concentration results when 279 ml. of a 0.660 M NaCI solution is mixed with 567 mL of a 0....

A: Concentration in terms of Molarity is the ratio between total moles of NaCl and total volume.  

Q: The isotope of plutonium 4* Pu is used to make thermoelectric power sources for spacecraft. Suppose ...

A: Given that, 2.0 kg of 238Pu (used in thermoelectric power sources for spacecraft) has launched in 20...

Q: Given the following spectrum, estimate Amax: 1.2 1 0.8 0.6 0.4 0.2 380 430 480 530 580 Wavelength (n...

A:

Q: Express your answer using two significant figures. A, a weak acid, with Ka = 1.0 x 10-8, also forms ...

A:

Q: Explain the mechanism of analysis of sulfate gravimetrically in [Cu(NH3)4]SO4.H2O complex and determ...

A: We have to calculate theoretical yield of SO4-2 ion.

Q: Fe+ (aq) + SCN (aq) = FeSCN²+ (aq) A solution is made containing an initial Fe+] of 1.2 × 10-3 M and...

A:

Q: 1. Draw the product(s) of the following reactions. Include stereochemistry when relevant. a OH H*/H2...

A:

Q: (1) Part of the biosynthesis of the polyketide lovastatin is shown below. (a)Using a reaction mechan...

A:   At certain steps ketoreductase (KR) ,dehydrase (DH),enoyl reductase (ER) or methyl transferase (Me...

Q: TUS V Complete the table below. Be sure each of your answer entries has the correct number of signif...

A:

Q: Calculate the osmotic pressure associated with 50.0 g of an enzyme of molecular weight 98,000 g/mol ...

A:

Q: This energy diagram shows the allowed energy levels of an electron in a certain atom. (Note: the SI ...

A:

Q: below, what are all the possible products produced from this reaction. What is the relationship betw...

A: H2,pd/C is reagent which give syn addition of Hydrogen.  

Q: Construct the expression for Kc for the following reaction. CH,COOH(aq) + H,O(1) = CH,COO (aq) + H,O...

A:

Q: One dose of an antacid contains 860. mg each of Mg(OH)2 and Al(OH)3. How many moles of each compou...

A: Given:- One dose of an antacid contains 860. mg each of Mg(OH)2 and.     Al(OH)3. To find:- How many...

Q: 2 You will need 25.0 mL of 0.5 M solutions of each reagent. To do this: Calculate the mass of sodium...

A: Molar mass of sodium carbonate is = 105.99 g/mol. Molarity of a solution is given by  = Moles/volume...

Q: The hydroxide ion concentration of an aqueous solution of 0.482M hydrocyanic acid is [OH-] =

A:

Q: A 25.0ml flask contains methane (CH4) gas at 22.5•C the pressure in the flask is 225.2 mmHg. How man...

A: Volume of flask (V) = 25.0 ml = 0. 0250 L Temperature (T)  = 22.5 °C = 273.15 + 22.5 K = 295.65 K Pr...

Q: Write the formulas for the following ionic compounds.

A: Dear student, since you have asked a question which has multiple subparts but according to guideline...

Q: Combining 0.315 mol Fe,0, with excess carbon produced 18.0 g Fe. Fe,0, + 3C - 2 Fe + 3 CO What is th...

A:

Q: The following alkyl azide (R-N3) can be synthesized in two synthetic steps. Propose a two step synth...

A: Both the steps occurs via Sn2 mechanism.  In 1st reaction, OH is not a good leaving group. In presen...

Q: 4Cr+3o2 -> 2 CrO3 Starting with 1.4 grams of O2, how many moles of Cr2O3 van be produced?

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as...

Q: In the year 1980, countries near the United States experienced an increase in acid precipi- tation. ...

A: The burning of Fossil fuels produces acidic oxide like sulfur dioxide or nitrogen dioxide etc. which...

Q: Experiment 3 Repeat the experiment above (Question 2) using a 10 mL pipette to dispense the 10 mL of...

A: The mean weight, standard deviation and the RSD of the water dispensed is needed to be calculated.  ...

Q: d. Find AH for the dissolution of 1.00 g NAOH in water. AH=-qmcst AH = kJ/g e. Find AH for the disso...

A: When 4.98 g of NaOH was dissolved in 49.72 g of water ., ∆Hrxn = - 6036.3 Joule

Q: A sample of solid Ca(OH), was stirred in water at a certain temperature until the solution contained...

A:

Q: If 143.56 mL of 0.6653 M ammonium carbonate reacts with 175.37 mL of 0.8732 M chromium(II) sulfate i...

A: Percent yield is the ratio of actual yield to theoretical yield multiplied by 100.

Q: Why is fractional distillation more efficient than simple distillation when purifying liquid mixture...

A: Fractional distillation is used to separate a mixture of liquids with similar boiling points (separa...

Q: A mixture of nitrogen and oxygen gas is compressed from a volume of 92.0 L to a volume of 85.0 L, wh...

A:

Q: what is the IUPAC name of the ff: 1. CH3CH=CHCH2CH3 2. CH3(CH2)4NH2

A:

Q: Compare Time Domain-NIRS, CW-NIRS and Frequency Domain-NIRS? Derive and  explain

A: •The time-space (TD) method in close infrared spectroscopy (NIRS) has the best potential among the c...

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.