11) Using Bohr's equation for the energy levels of the electron in the hydrogen atom, determine the energy (J) of an electron in the n = 4 level.

Q: Which would you expect to have the higher melting point (or boiling point): C,H,8 or C,H,? Explain. ...

A:

Q: What is the [H30+] concentration in a solution that is 4.25x10^-4 M C6H5NH3+? Kb = 3.98 x 10^ -10

A: Given data, Kb of C6H5NH2 = 3.98*10-10  [C6H5NH3+]=4.25*10-4 M  Then, [H3O+]=? 

Q: what is the chemical formula for copper(I) chloride and for gold (III) cyanide?

A:

Q: Determine which of the substrates will and will not react with NaOMe in an SN2 reaction to form an a...

A:

Q: Useful Constants 1.055 × 10-34 h. Js 6.626 × 10-34 9.109 x 10-31 1.602 x 10-1D 8.854 x 10-12 Js me k...

A: Given data:  h = 6.626 x 10-34 Js me = 9.109 x 10-31 kg q = 1.602 x 10-10 C  

Q: + H-Br e above reaction involves heterolytic bond breakage of HBr. Encircle the nucleophile(s) and e...

A:

Q: 40 The ratio of an observed measurement of colligative property for a solute in a solution to the va...

A:

Q: Why pi(π) bond needed a longer wavelength than the sigma bond?

A: In chemistry, all the bonds are generally classified in two two major groups i.e, ionic and covalent...

Q: 1. Which of the following is NOT an example of physical property? B. Length A. Texture C. Intensity ...

A:

Q: color of the flame produced when using in AAS in potassium determination  a. orange  b. none of th...

A: Potassium produce flame color blue purple.  Hence e  option is correct that is purple. 

Q: normality of 0.5781 g acid (eq wt = 187.3) in 250.0 mL of solution

A:

Q: LIMIT TEST (IMPURITIES - BIOLOGICAL) Instructions: Note the color change of each of the samples by ...

A: A question based on general chemistry that is to be accomplished.

Q: Revie Constam Part A The Haber-Bosch process is a very important industrial process. In the Haber-Bo...

A:

Q: Which one has the highest vapor pressure and why? a. Alcohol b. Sea water c. Water d. Mercury e. Dea...

A: at boiling point the vapor pressure of the substance that equal to atmospheric pressure  as the numb...

Q: Starting from the universal gas constant (R = 0.0821 · mol-K ), determine the volume (in L) occupied...

A: Given, n=2.45 moles  T= 305K  P= 0.956atm  V=? Complete solution is given below in next step 

Q: The heat of vaporization of hexane is 30.8 kJ. mol-1. The boiling point of hexane at a pressure of 1...

A:

Q: The amount of iron in a meteorite is determined by a redox titration using KMnO4 as the titrant. A 2...

A:

Q: 37 What is the color of the phenolphthalein when the reactions of acid and base reach the end point?...

A: Indicators can be defined as the  substances whose solutions change their  color due to changes in p...

Q: Calculate the pH of a solution that is 0.052 M in HCl and 0.020 in HClO4

A: Given that,  The concentration of the solution in HCl = 0.052 M And the concentration of the solutio...

Q: Which compound produces three ions per formula unit by dissociation when dissolved in water? O alumi...

A:

Q: Which compounds give a 'H NMR spectrum with two signals in a ratio of 2:3? b. CI

A: 1H-NMR: 1H-NMR provides number and types of hydrogens of unknown compound.    

Q: st the (i) metal oxidation state, (ii) d-electron count, and (iii) total electron count for each of ...

A: Handwritten solution is provided in Step 2 explaining every detail.

Q: What mass of Ba(IO3)2 (487 g/mol) can be dissolved in 250 mL of water at 25°C? Ba(IO3)2 ⇌ Ba2+ + 2 I...

A:

Q: Acetylene (C,H,) gas is often used in welding torches because of the very high heat produced when it...

A: Given, Acetylene reacts with oxygen gas to produce carbon dioxide and water. Moles of carbon dioxide...

Q: After 24 days, 2.0 mg of an original 128 mg sample remain. Find the half-life of the sample. a. 2 d...

A: Given: Initial amount of sample = 128 mg Remaining amount of sample = 2.0 mg Time elapsed = 24 days

Q: A common property for both thiols and thioethers is very high boiling points ability to form stron...

A: Thiols, are RSH and thioether, RSR both are sulfer compound of organic .

Q: An iron ore has a 55% Fe2O3 with 5% moisture content. What is the Percentage of Fe2O3 in a dry basis...

A:

Q: 4. For a liquid substance with different boiling points, which separation technique wouid be best us...

A:

Q: Propose a mechanism to account for the formation of 2,3-dimethyl-2-butene from 3,3- dimethyl-2-butan...

A:

Q: Why is paper used for weighing dry, non-hygroscopic chemicals only? Why is watch glass used otherwis...

A: When weighing chemicals, only dry, non-hygroscopic substances may be weighed on paper, otherwise, us...

Q: 19. Rank the following atoms in order of increasing electronegativity. Label the most electronegativ...

A:

Q: A polar bond does not always lead to polar molecule. Explain the statement by reffering to OF2 and C...

A: A question based on molecules that is to be accomplished.

Q: (Q99) Consider the formation of sulfur dichloride gas from gaseous sulfur and chlorine gas: S8 (g) +...

A: Complete solution is given below in next step

Q: a. Alcohol b. Sea water c. Water d. Mercury e. Dead Sea f. Acetone Among those choices, which one ha...

A: Intramolecular forces are the forces that hold atoms together within a molecule. Intermolecular forc...

Q: Propose a synthesis of the following: A) OH осн, но- B) CH, CH3 H3C OH H3C. CH H3C.

A: We are required to  design  synthesis for a certain chemical reaction using different reagent to pro...

Q: A solution was prepared by dissolving 11.0 g of compound in 270.0 g of ethanol raising the boiling p...

A:

Q: 1. Name at least 3 naturally occurring alkenes and give their use or significance.

A:

Q: At 3000 K, the partial pressures of CO2, CÓ and O2 are 0.6, 0.4 and 0.2 atm, respectively. Calculate...

A: Temperature = 3000 K  Reaction :-  2CO2(g) <--------> 2CO(g) + O2(g) 

Q: It is a number that use to keep track of how many electrons an atom has? Select one: a. formal Charg...

A:

Q: When considering the mechanism of the following reaction, which of the following statements is TRUE?...

A: First step of the reaction is acid-base reaction where alcohol group acts as Bronsted base and accep...

Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

A: We have to tell whether the given molecules are polar or non-polar. If a molecule has permanent dipo...

Q: Consider the following reaction: 2 Al + 3 CuCl2 → 3 Cu + 2 AICI3 The reaction begins with 15.55 g of...

A:

Q: The following visualization methods involve chemical reaction EXCEPT: a. Iodine Chamber b. Vanillin-...

A: Answer - The correct option is -  a. Iodine Chamber  Explanation - According to the given question ...

Q: 1.0 0.5- 100 200 300 400 Temperature (K) (a) Estimate the normal boiling point and freezing point of...

A:

Q: he volume (in

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

Q: CS2(1) + 302(g) CO2(g) + 2SO2(g) Given: C(s) + O2(g) S(s) + O2(g) C(s) + 2S(s) CO2(g) ni AH = -393.5...

A: Given, CS2(l) + 3O2(g) ➝ CO2(g) + 2SO2(g)  ∆H = ? a) C(s) + O2(g) ➝ CO2(g)  ∆H = -393.5 kJ b) S(s) +...

Q: A chemical engineer is studying the following reaction: HCH;CO,(aq)+CH,NH,(aq) → CH;CO,(aq)+CH,NH,(2...

A:

Q: Identify and name FOUR (4) functional groups that exist in structure below. CH2CH3 N. ČH=CHCH2CH3 CI...

A:

Q: -23 g and a small airplane has a mass of 5000. kg. An aluminum atom has a mass of 4.48 x 10 Use this...

A: Given: Mass of aluminum atom = 4.48×10-23 g Mass of small airplane = 5000 kg

Q: A chemist determines by measurements that 0.0500 moles of oxygen gas participate in a chemical react...

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to ...