When hemoglobin transitions from the R-state to the T-state, which of the following occurs? A. The porphyrin ring becomes slightly "puckered" and the iron in each heme is pulled slightly out of its plane B. It releases CO2 C. It releases protons D. Its subunits dissociate

Q: 16. How many atoms are in one (molecule) formula unit of Fe2(CrO4)3?

A: Given -> Molecular formula = Fe2(CrO4)3  

Q: Fihd the mass (grams) of one Hg (mercury) atom. (use 4 s.f.) 12. How many grams of O2 gas are there ...

A:

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: lonic Polar covalent Nonpolar covalent

A:

Q: Which of the following is NOT true of the transition state? O a. It is unstable and dissociate into ...

A:

Q: What does each symbol represent? K Gibbs free energy reaction quotient Greek lowercase mu mole fract...

A: Symbols and their representations are given below

Q: What fraction of a reactant has been consumed after 4 half- lives in a first-order reaction? O a. 87...

A: Given- First order reaction ->number of half-life =4  

Q: For the following reaction, K, = 1.02 x 10-4 at 400 K: Br2 (g) + F2 (g) = 2 BrF (g) a) Determine the...

A:

Q: Indicate the type of compound (I = ionic, M = molecular/covalent, OA = oxyacid, BA = binary acid) an...

A: Ionic bond is formed by transfer of electrons and formed between a metal and non-metal.  Covalent bo...

Q: pH

A:

Q: (A) bonding pair (D) homogeneous mixture 1. Two or more different elements chemically combined make ...

A: We have to answer the following questions given above. 

Q: Cacodylic acid (dimethylarsinic acid, HASO2(CH3)2) is a common buffer used in biology to prepare and...

A:

Q: 14. How many atoms of oxygen are contained in 500. g of Fe,(S0,)3? 15 Find the molor nogg of Ee (CO)

A:

Q: KB AID Cat Mgs

A:

Q: Determine the product of the following reaction! OH РСС

A:

Q: Which of the following is expected to result in the following compound ? EņCuli CH;CH,MgBr OCH; 1) O...

A:

Q: A voltaic cell consists of a Zn/Zn?+ half-cell and a Ni/Ni²+ half-cell at 25 °C. The initial concent...

A: We have to solve the above question.

Q: Use the standard reduction potentials shown here to answer the questions. A copper, Cu(s), electrode...

A: Given data : E cell = 0.052 V

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

A: A redox reaction can be explained as a reaction in which the reduction (gain of electrons) and the o...

Q: 7. The five spheres below represent Se, Se²-, O, H, and S, not necessarily in that order. 37 pm 72 p...

A: Answer of the question given below, 

Q: 1)) Determine the structure of the products in the three reactions and indicate if the final product...

A: HNO3 - H2SO4 is a nitrating mixture that undergoes nitration in benzene.  KMnO4 is an oxidizing agen...

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: Use the chemical equation to answer the question. 4K(s) + O2(g) → 2K2O(s) The molar mass of potass...

A: ANS. 19.5 g

Q: Choose the INCORRECT statement. Group of answer choices 1. The color of Zn, Cd, and Hg compounds d...

A:

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

A: Organic reaction mechanisms:

Q: 1.28 x 1023 molecules of C10H22 would have what number of carbon atoms? 6.

A:

Q: (CH),) is shown below. Highlight each atom that is in a methyl group. The chemical structure of dime...

A:

Q: This radiation is emitted simultaneously. Which is the most energetic? А. A wave length of 234 nm В....

A: Correct option is (D) explanation is given below

Q: 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see ...

A: To predict the hybridization state and shape of the particular carbon centre , one has to determine ...

Q: How many covalent bonds are normally formed by each element? (a) N (b) F (c) C (d) Br (e) O

A: The formation of covalent bonds take place when atoms share their valence electrons with other atoms...

Q: The a-decay of 238U (t,/2 = 4.47x10°y) leads to 234TH (t/2 = 24.1d). A sample of uranium ore should ...

A: Given, α decay of U238 to T234h. The isotopic abundance of U238 (natural) = 99.3 %

Q: Write the equilibrium expression for Ca^2+ + 2Cl^- ⇌ CaCl2 with activity coefficients. pls answer an...

A: activity = activity co-efficients * molality(or,concentration term)

Q: What is the molar mass of lead (IV) nitrate, Pb(NO3)4?

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 .

Q: Treatment of 1,2-dimethylcyclopentene with Pt and H2 gas will produce a.cis-1,2-dimethylcyclopentan...

A: it is a surface catalyst reaction hydrogen to the less steric position and it will be syn manner and...

Q: Question 9 Which one of the following statements is FALSE? In a TLC experiment with amino acids, if ...

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 pH of 0.10 M Zn(NO3)2, which dissolves to give 0.10 M Zn2+ (pKa=9.0) and 0.20 M NO3-

A: Here we have to calculate the pH value.

Q: e percent composition of

A:

Q: An electrochemical cell is based on these two half-reactions and their given standard reduction pote...

A: To calculate cell potential , we would use nernest equation.  For this we would require standard cel...

Q: 4. What volume (in mL) of a 0.360 M Ba(OH)2 solution is needed to neutralize 25.0 mL of a 0.296 M so...

A: In the given question we have to find out the volume of Ba(OH)2 solution in mL.  Given data:  concen...

Q: What is the minimum concentration of phosphate ions required to precipitate silver phosphate in a 0....

A: Molarity of AgNO3 = 0.010 M Ksp for silver phosphate = 2.83 × 10^-18  

Q: xenon atom, how many electrons at most can contain the 3p orbitals?

A: For a particular 'n'  value ,  possible azimuthal quantum number (l) = (n-1)...0 Here n= 3 , possibl...

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: may use any other reagents necessary, as long as the starting material is incorporated into the prod...

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: 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: Part A MISSED THIS? Read Section 15.5 (Pages 650 - 656), 15.7 (Pages 661 - 666) .Suppose that a cata...

A: Given data : 

Q: Which of these bonds is the most polar? The least polar? (a) C------N (b) C------C (c) C------O

A:

Q: 5. Define electrolytic cell and voltaic cell?

A:

Vitamins and Coenzymes

A class of organic compounds needed in the human body for normal activities is known as vitamins. They are characterized into two parts depending upon their solubility in water. They can act as coenzymes, cofactors, or prosthetic groups for enzymes.