1,698 Answered Questions for the topic biochemistry

11/14/19

Cyanide and electron transfer
When people ingest cyanide ion, the cyanide binds strongly to the enzyme that transfers electrons from cytochrome c to oxygen.  This blocks the enzyme from functioning.Why does this cause... more
Follows • 2
Expert Answers •1

11/13/19

BIOLOGY DNA QUESTION
for the following mRNA with the seq 5' AUGCGGUACAGCUUAGC 3' what is the originating genomic DNA template strand? I said GCUAAGCUGUACGCUA. is this correct or should the U be replaced with T?Thank you. more
Follows • 1
Expert Answers •1
Biochemistry Biology Chemistry

11/04/19

Calculate the amount (in g) of NaOH required to prepare 150 mL of 3 M NaOH solution
Follows • 2
Expert Answers •1

11/02/19

Confusing Chemistry Math Question

If a closed vessel is charged with 65000.0 Pa of nitric oxide and allowed to react with excess liquid bromine, what is the equilibrium partial pressure of the product?NO(g) + 1/2 Br2(l) ↔ NOBr(g)... more
Follows • 2
Expert Answers •1

11/02/19

Confusing Chemistry Math Question

The equilibrium constant for dissociation of ammonium chloride:NH4Cl(s) ↔ NH3(g) + HCl(g)is equal to KP = 0.013312 at 550.0 K. If 1.7 g of ammonium chloride is placed in a 1.0 L vessel and charged... more
Follows • 1
Expert Answers •1

11/02/19

Chemistry Math Question

100.0 mL of a .40 M solution of unknown weak acid is combined with 50 ml of a .25 M strong base, and the final pH of the solution is measured to be 5.25. What is the pKa of the unknown acid?
Follows • 1
Expert Answers •1

11/02/19

Chemistry Math Problem

Calculate the percentage of acetic acid that exists in ionized form when dissolved in water at 0.65 M total concentration. Ka(HOAc) = 1.76 x 10-5.
Follows • 2
Expert Answers •1
Biochemistry Chemistry

11/01/19

Knowing that: NaOH + HCl → NaCl + HB2BO How many moles of HCl are required to react with 1 mole of NaOH? How many were required to react with the number of moles added in the titration?

Knowing that: NaOH + HCl → NaCl + HB2BOHow many moles of HCl are required to react with 1 mole of NaOH? How many were required to react with the number of moles added in the titration?
Follows • 2
Expert Answers •1

10/30/19

Does ADP allosterically activate or inhibit pyruvate kinase in Glycolysis? Or does it play a role in the allosteric regulation? If so, how?

I cannot find anywhere in my textbooks or scientific literature if whether or not ADP plays a role in allosterically activating or inhibiting pyruvate kinase in the glycolytic pathway. I know that... more
Follows • 1
Expert Answers •1

10/28/19

Buffer Solution Chemistry Math Question 6
How many grams of potassium lactate (KC3H5O3) must be added to 276.0 ml of 0.2 M lactic acid in order to prepare a buffer solution at pH 3.3? The pKa of lactic acid is 3.8.
Follows • 2
Expert Answers •1

10/28/19

Buffer Solution Chemistry Math Question
How many grams of benzoic acid would you add to 25 mL of 0.45M sodium benzoate in order to prepare a buffer solution at pH=3.8? Ka of benzoic acid is 6.3E-5
Follows • 2
Expert Answers •1

10/25/19

What is the probable diagnosis if BUN is high and serum creatinine is normal?
Follows • 1
Expert Answers •1

10/23/19

Acids & Bases Chemistry Math Question 6
An aqueous solution containing 0.24 M of unknown base has a measured pH equal to 8.39. What is the value of pKb for the unknown base?
Follows • 1
Expert Answers •1

10/23/19

Acids & Bases Chemistry Math Question 5
In a 0.1 M solution of chlorous acid, what percentage of the acid is ionized to the chlorous anion, ClO2-? Ka = 1.1 x 10-2
Follows • 1
Expert Answers •1

10/23/19

Acids & Base Chemistry Math Question
A solution of carbonic acid has its pH adjusted to 8.19 by addition of strong base. What is the equilibrium concentration ratio of carbonate ion to carbonic acid in the final solution? The acid... more
Follows • 1
Expert Answers •1

10/18/19

Calculate the formula mass of each compound. Keep at least one decimal place in atomic masses from the periodic table.
hydrogen peroxide, H2O2: phosphoric acid, H3PO4:
Follows • 1
Expert Answers •1

10/17/19

Chemistry: Equilibrium Math Question 9
The equilibrium constant for dissociation of ammonium chloride:NH4Cl(s) ↔ NH3(g) + HCl(g)is equal to KP = 0.013312 at 550.0 K. If 1.5 g of ammonium chloride is placed in a 1.0 L vessel and charged... more
Follows • 2
Expert Answers •1

10/17/19

Chemistry: Equilibrium Math Question 8
The water-gas shift reaction is crucial to many industrial processes:H2O(g) + CO(g) ↔ H2(g) + CO2(g)The equilibrium constant for this reaction is K = 3.087012 at 802.0 K. If a vessel is initially... more
Follows • 1
Expert Answers •1

10/17/19

Chemistry: Equilibrium Math Question 7
Consider the equilibrium between hydrogen sulfide and its gaseous elements:2 H2S(g) ↔ 2 H2(g) + S2(g) KP = 2.023E-6 at 908.0 Kif a vessel is initially charged with 8.35 bar of pure H2S(g), what is... more
Follows • 1
Expert Answers •1

10/17/19

Chemistry: Equilibrium Math Question 6
Determine the equilibrium vapor pressure of germanium metal at 508.0 C. The standard enthalpy of vaporization of germanium is 376.6 kJ/mol and the vapor pressure at 100 C is 1.6E-32 Pa. Be sure to... more
Follows • 1
Expert Answers •1

10/17/19

Chemistry: Equilibrium Math Question 5
A closed vessel is charged with 0.23 bar of hydrogen gas and allowed to react with excess I2(s) at 25 C.H2(g) + I2(s) ↔ 2 HI(g)What is the final equilibrium pressure of HI(g) in the vessel? KP = 0.284 more
Follows • 1
Expert Answers •1

10/17/19

Chemistry: Equilibrium Math Question 4
At 25 C, the partial pressure of CO2(g) in a bottle of soda water is 1 bar. Calculate the equilibrium concentration of dissolved carbon dioxide under these conditions. The equilibrium constant for... more
Follows • 1
Expert Answers •1

10/17/19

Chemistry: Equilibrium Math Question 3
A2B ↔ 2A + BWith this simple equation, if you start with 0.815 M A2B, and at equilibrium 53% of it has decomposed, what is the equilibrium constant?
Follows • 1
Expert Answers •1

10/17/19

Chemistry: Equilibrium Math Question 2
The equilibrium constant for dissolving oxygen gas in aqueous solution is 1.33E-4. Compute the equilibrium concentration of dissolved oxygen, in mg L-1 when the partial pressure of O2 above the... more
Follows • 1
Expert Answers •1

10/17/19

Chemistry: Equilibrium Math Question
If a closed vessel is charged with 89000.0 Pa of nitric oxide and allowed to react with excess liquid bromine, what is the equilibrium partial pressure of the product?NO(g) + ½ Br2(l) ↔ NOBr(g)... more
Follows • 1
Expert Answers •1

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.