1,698 Answered Questions for the topic biochemistry

07/16/20

13. NEED HELP FAST

Calculate the pH of a  0.123 M  solution of  NaNO2.  The ionization constant,  𝐾a,  for the acid,  HNO2,  is  4.60×10−4. pH=
Follows • 2
Expert Answers •1

07/16/20

19. NEED HELP FAST

A volume of  500.0 mL  of  0.100 M   NaOH  is added to  535 mL  of  0.200 M  weak acid  (𝐾a=2.96×10−5).  What is the  pH  of the resulting buffer?HA(aq)+OH−(aq)⟶H2O(l)+A−(aq) pH=
Follows • 2
Expert Answers •1

07/16/20

20. NEED HELP FAST

The  p𝐾a  of hypochlorous acid is  7.530 . A  52.0  mL solution of  0.145  M sodium hypochlorite ( NaOCl ) is titrated with  0.321  M  HCl .Calculate the pH of the solution after the addition... more
Follows • 2
Expert Answers •1
Biochemistry

07/16/20

My question is based on Biochemistry
20) Binding of oxygen to Fe2+ of heme group leads to  a Flattening of Heme b Increased binding of DPG c Formation of salt bridges d All options are true 19) Smokers are known to have an... more
Follows • 2
Expert Answers •1

07/15/20

5. NEED HELP FAST!!!

The reactionC4H8(g)⟶2C2H4(g)has an activation energy of  262 kJ/mol.  At  600.0 K,  the rate constant,  𝑘,  is  6.1×10−8 s−1.  What is the value of the rate constant at  790.0 K?
Follows • 1
Expert Answers •1

07/14/20

NEED HELP FAST!!!!

The reactionC4H8(g)⟶2C2H4(g) has an activation energy of  262 kJ/mol.  At  600.0 K,  the rate constant,  𝑘,  is  6.1×10−8 s−1.  What is the value of the rate constant at  790.0 K?
Follows • 2
Expert Answers •1

07/13/20

NEED HELP FAST!!!!

The reaction C4H8(g)⟶2C2H4(g)has an activation energy of 262 kJ/mol. At 600.0 K, the rate constant, 𝑘, is 6.1×10−8 s−1. What is the value of the rate constant at 790.0 K?
Follows • 2
Expert Answers •2

07/13/20

NEED HELP FAST!!!
For A⟶products, time and concentration data were collected and plotted as shown. [𝐀] (𝐌)𝐭 (𝐬) 0.600 00.0 0.484 30.0 0.405 60.0 0.349 90.0 Determine the reaction order, the rate... more
Follows • 1
Expert Answers •1

07/13/20

NEED HELP FAST!!!!

Consider the given reaction.A(aq)+B(s)↽−−⇀C(aq)𝐾=9.40Suppose  13.7 mol A  reacts with excess  B  in  5.90 L  of solution. Calculate the concentration of  C  at equilibrium.
Follows • 2
Expert Answers •2

07/13/20

NEED HELP FAST!!!!

For  A⟶products , time and concentration data were collected and plotted as shown.[𝐀] (𝐌)  𝐭 (𝐬) 0.600  00.0 0.484  30.0 0.405  60.0 0.349  90.0 A plot of the concentration of A versus time is... more
Follows • 1
Expert Answers •1

07/13/20

NEED HELP FAST!!!

The reactionC4H8(g)⟶2C2H4(g) has an activation energy of  262 kJ/mol.  At  600.0 K,  the rate constant,  𝑘,  is  6.1×10−8 s−1.  What is the value of the rate constant at  790.0 K?
Follows • 2
Expert Answers •1

07/13/20

NEED HELP FAST!!!

Consider the given reaction.A(aq)+B(s)↽−−⇀C(aq)𝐾=9.40 Suppose  13.7 mol A  reacts with excess  B  in  5.90 L  of solution. Calculate the concentration of  C  at equilibrium.
Follows • 1
Expert Answers •1

07/13/20

NEED HELP FAST!!

At a certain temperature,  0.760 mol SO3  is placed in a  4.50 L  container.2SO3(g)↽−−⇀2SO2(g)+O2(g) At equilibrium,  0.160 mol O2  is present. Calculate  𝐾c.
Follows • 1
Expert Answers •1

07/13/20

NEED HELP FAST!!!

The rate constant for this first‑order reaction is  0.0660 s−1  at  400 ∘C. A⟶products After how many seconds will  17.4%  of the reactant remain?
Follows • 1
Expert Answers •1
Biochemistry

06/30/20

Which of the following protein structure has a lowest energy
amyloid  native (folded) structure  unfolded structure aggregates
Follows • 1
Expert Answers •1
Biochemistry

06/30/20

Which of the following are related the entropy changes in protein folding (U --> N)

Follows • 1
Expert Answers •1
Biochemistry Science Biology Act Science

06/18/20

Pressure of oxygen
If the partial pressure of oxygen is the same at the top of Mount Everest (elevation above sea level 8848m) as Toronto (elevation above sea level 76m), why is it so much harder (and dangerous) to... more
Follows • 3
Expert Answers •1
Biochemistry

06/09/20

Gytis DNA molecule
Describe the structure of a DNA molecule, including how individual constituents bind to each other along a length of DNA, and how two DNA strands interact with each other.
Follows • 1
Expert Answers •1
Biochemistry

06/09/20

Gytis Biochemistry
Discuss what happens to ATP in a cell that is active and performing energy requiring tasks, and then enters a resting phase where it no longer performing energy requiring tasks.
Follows • 1
Expert Answers •1
Biochemistry

06/04/20

Gytis Enzymes
Enzymes are very specific for the reactions they can catalyse, explain why this is important.
Follows • 1
Expert Answers •1
Biochemistry

06/03/20

Gytis Biochemistry
Give two reasons why you think hormones might be produced as pro-hormones. Write up to a paragraph on each.
Follows • 1
Expert Answers •1
Biochemistry

05/31/20

Biochemistry...
. A molecule is described to you as an aliphatic, polar glycolipid. Which of the following statements must then be true for the molecule (select all that are correct); a) it is soluble... more
Follows • 1
Expert Answers •1
Biochemistry Science English Business

05/30/20

Please solve it
Q.1. Consider the nutrients' concept below and use it to answer question1(a,b)Nutrient Access concept: it is believed that maximum crop growth can be achieved by constantsupply of soil nutrients... more
Follows • 1
Expert Answers •1
Biochemistry Science Biology Chemistry

05/29/20

I need help Please
According to Model 3, wolves (gray and red) are more closely related to what other group—dogs or coyotes? Explain your answer.
Follows • 1
Expert Answers •1
Biochemistry Science Biology Chemistry

05/27/20

i need help please

Identify one organism (plant or animal) in which artificial selection is used, and describe how that selection process occurs. 
Follows • 1
Expert Answers •2

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.