1,698 Answered Questions for the topic biochemistry

03/15/23

Identify the affect the equilibrium of the system on the following given situation.
Consider the reaction that has reached a state of equilibrium at 200oC:CO(g) + 3H2(g) ⇌ CH4(g) + H2O(g)   exothermic Determine whether each of the following will increase the equilibrium... more
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Biochemistry

03/11/23

How do I reach out to more students?
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Biochemistry Math Chemistry Physics

02/27/23

Calculate the moles of water removed and the moles of anhydrous calcium sulfate remaining in the crucible.
In a crucible, a 1.803g sample of hydrated calcium sulfate (CaSO4 . XH2O) is heated until a constant mass is reached. The mass of the anhydrous calcium sulfate is 1.426g.
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02/24/23

Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M.
The decomposition of H2O, to water and oxygen follows first-order kinetics with a rate constant of 0.0400 min-1.2H2O2(I) -> 2H2O(I)+ 02(g)Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M. more
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02/24/23

Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M
Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M
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02/22/23

What is the reaction of Fe metal with ferric chloride?
What is the reaction of Fe metal with ferric chloride?
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Biochemistry Chemistry

02/21/23

Chemical reactions
Ammonium phosphate NH43PO4 is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid H3PO4 with liquid ammonia. Calculate the moles of ammonia needed... more
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Biochemistry Math Biology Chemistry

02/14/23

A rate law is 1/2 order with respect to a reactant. Describe (quantitatively) what happens to the rate of reaction when the concentration of this reactant is doubled.

A rate law is 1/2 order with respect to a reactant. Describe (quantitatively) what happens to the rate of reaction when the concentration of this reactant is doubled.
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Biochemistry Math Biology Chemistry

02/14/23

Consider the possible reaction mechanism below.
A + B ➞ C + D D + B ➞ C a. Show that mechanism is consistent with balanced equation. b. Show which is the rate-determining step (RDS). Explain your choice.
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Biochemistry Math Science Biology

02/14/23

The experiment is repeated at 500˚C. How would the following change (qualitatively) at the new temperature (explain your answer)?

This reaction was originally done at a temperature of 250K, but now it is being done at 500K.4PH3 (g) ➞ P4 (g) + 6H2 (g)a. The half-life of phosphine. b. The rate law for phosphine decomposition.... more
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Biochemistry Math Science Biology

02/14/23

Assume the rate of disappearance of PH3 is 2.5 x 10^-3 M/s at 20 seconds.

4PH3 (g) ➞ P4 (g) + 6H2 (g)a. What is the rate of appearance of P4 at 20 seconds?b. How will the rate of P4 appearance change (qualitatively) as the reactionprogresses?Justify each answer!
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02/11/23

Provide the structures of the 1,2- and 1,4- addition products obtained from the following reaction.
Provide the structures of the 1,2- and 1,4- addition products obtained from the following reaction. Make sure to label which is 1,2- and which is 1,4-, which is kinetic and which is the... more
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02/11/23

What is the major organic product obtained from the following reaction?
What is the major organic product obtained from the following reaction?
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02/11/23

Provide a brief explanation of why the dianion (below) is antiaromatic.

Provide a brief explanation of why the dianion (below) is antiaromatic. Your answer should identify the hybridization of each carbon atom and account for which electrons are in the pi system.
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02/11/23

What is the product of the following Diels-Alder Reaction?
What is the product of the following Diels-Alder Reaction? Make sure to include the stereochemistry in your answer.
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02/11/23

What is the major organic product obtained from the following reaction?
What is the major organic product obtained from the following reaction?
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02/08/23

Based on the structure of bromfenac, identify at least three (3) functional groups.
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Biochemistry Chemistry

02/03/23

Buffer system- addition of base

create 25.0 mL of a 0.50M citrate buffer at a pH of 3.2, using Dihydrogen citrate (Ka=1.8x10^-5). For the buffer to work for the purpose needed it must be able to withstand the addition of 1.0 mL... more
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Biochemistry

01/22/23

What is the importance of the buffering effect of the pair of chemical species H2PO4-/HPO42- for the human body?
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Biochemistry Chemistry

01/20/23

chemistry question

Aqueous hydrobromic acid HBr will react with solid sodium hydroxide NaOH to produce aqueous sodium bromide NaBr and liquid water H2O.Suppose 75.2 g of hydrobromic acid is mixed with 65. g of sodium... more
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Biochemistry Chemistry

01/12/23

acid base chemistry

What quantity in moles of CH₃NH₃Cl need to be added to 200.0 mL of a 0.500 M solution of CH₃NH₂ (Kb for CH₃NH₂ is 4.4 × 10⁻⁴) to make a buffer with a pH of 11.45?
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Biochemistry Chemistry

01/12/23

What is the equation?
What is the minimum mass of magnesium that would need to be heated with an excess of oxygen, to make 150 g of magnesium oxide?
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Biochemistry Chemistry

01/12/23

what is the ionic and net ionic equation

Srl2 + Li2SO4 — SrSO4 + 2Lil
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Biochemistry Biology Chemistry

01/09/23

What are the connections between Metabolism and Biochemistry?

I had a question where if I had to summarize the connections between metabolism (processes and in general) with biochemistry (Alkanes, alkyl halides, alcohols, etc etc), what would be some... more
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Biochemistry Biology Chemistry

01/04/23

What is the role of fructose-2,6-bisphosphate in glycolysis?

How does this intermediate effect glycolysis if it is not a direct compound in it?
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