1,698 Answered Questions for the topic biochemistry

Biochemistry Math Science Biology

06/03/21

URGENT- Please help me with honors chemistry molarity
what is the quantity of moles of solute in 145.6 L of 0.812 M sodium cyanide? 
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Biochemistry Math Science Biology

06/02/21

URGENT: Please help me answer this honors chemistry solubility question.

If 10 grams of potassium chlorate were dissolved in 100 g of water at 70 degrees, how many more grams could be added until the solution was saturated?
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06/02/21

please help me with honors chem solubility question
Answer all parts:Which solvent, water or hexane (C6H14), would you choose to dissolve each of the following?(a) NaClA. waterB. hexane    (b) HFA. waterB. hexane    (c) octane (C8H18)A.... more
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Biochemistry

06/02/21

Determine the safest dye to use in the lab based on the results obtained from ames test for each mutagen

ScenarioYou are in charge of a new forensics laboratory and you need to decide the best method to conduct DNA analysis. DNA analysis is conducted by gel electrophoresis, which allows the... more
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06/02/21

Chromatography and CO2 reduction

How can chromatography and CO2 reduction help combat climate change? I know that chromatography is a technique for the separation of a mixture but I don’t how it might help in combating the climate... more
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Biochemistry Science Biology Chemistry

06/01/21

please help me with honors chem molarity question
Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO3 (ℳ = 106.45 g/mol).A. 419 gB.... more
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Biochemistry Science Biology Chemistry

06/01/21

please help me with honors chem molarity question
Lithium hydroxide is used in alkaline batteries. Calculate the molarity of a solution prepared by dissolving 1.495 moles of LiOH in enough water to give a final volume of 750. mL.A. 0.502 MB.... more
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06/01/21

please help me with honors chem molarity question
Ammonia will react with fluorine to produce dinitrogen tetrafluoride and hydrogen fluoride (used in production of aluminum, in uranium processing, and in frosting of light bulbs).2 NH3(g) + 5... more
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Biochemistry Science Biology Chemistry

06/01/21

please help me with honors chem molarity question
How many grams of NaH2PO4 are needed to react with 33.29 mL of 0.285 M NaOH?NaH2PO4(s) + 2 NaOH(aq)  Na3PO4(aq) + 2 H2O(l)------------------------------- g
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Biochemistry Science Biology Chemistry

06/01/21

please help me with honors chem molarity question

How many milliliters of 0.55 M HCl are needed to react with 6.3 g of CaCO3?2 HCl(aq) + CaCO3(s)  CaCl2(aq) + CO2(g) + H2O(l)-------------------- mL
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Biochemistry Science Biology Chemistry

06/01/21

please help me with honors chem molarity
Calculate each of the following quantities.(a) grams of solute in 164.8 mL of 0.207 M calcium acetate  ---------------g(b) molarity of 584 mL solution containing 21.1 g of potassium... more
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Biochemistry Chemistry

05/31/21

Any research papers in relation to biodegradable plastics and it's affect on the environment?
Looking for scientific research and data that either proves or disprove that biodegradable plastics are benefitting to the environment.
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Biochemistry

05/29/21

If the half of a reactant in a 1st order reaction is 25 minutes, then what is the extent of reaction after 2 minutes?
hi i need urgent answer for this question plz help me
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Biochemistry Science Biology Chemistry

05/28/21

please help me with this honors chemistry problem about solutions
Which aqueous solution of the following substances does not conduct an electric current?A. potassium hydroxideB. hydrogen bromide   C.  cesium iodideD. glucose, C6H12O6
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Biochemistry Science Biology Chemistry

05/28/21

please help me with this chemistry solutions problem

Which of the following solutions will be the best conductor of electrical current?A. ethylene glycol, C2H6O2(aq)B. potassium chloride, KCl(aq)     C. methyl alcohol, CH3OH(aq)D. bromine, Br2(aq)E.... more
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Biochemistry Science Biology Chemistry

05/28/21

please answer this solutions problem in honors chemistry

In some cases, the force of the attraction between the ions is so strong that it cannot be overcome by the interaction of the ions with the water molecules.A. trueB. false   
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Biochemistry Science Biology Chemistry

05/28/21

please hep with this honors chemistry solutions problem
A solution component present in lesser quantity than the solvent is called a(n)A. soluteB. mixture    C. diluentD. alloy.
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Biochemistry Science Biology Chemistry

05/28/21

please help me with this chemistry solutions problem
A solid solution of zinc in copper is an example of a(n)A. soluteB. solvent    C. alloyD. heterogeneous mixture.
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Biochemistry Science Biology Chemistry

05/28/21

please help me with honors chemistry solutions question
How many moles of ions are released when 0.27 mol of cobalt(II) chloride, CoCl2, is dissolved in water?A. 0.18 molB. 0.81 mol     C. 0.27 molD. 0.090 molE. 0.54 mol
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Biochemistry Science Biology Chemistry

05/28/21

please help me with this solutions problem for honors chemistry
Which of the following solutions will be the poorest conductor of electrical current?A. sulfuric acid, H2SO4(aq)B. lithium hydroxide, LiOH(aq)     C. sodium chloride, NaCl(aq)D. potassium nitrate,... more
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Biochemistry Science Biology Chemistry

05/28/21

Please help with honors chemistry solutions problem
Which must be present in an aqueous solution for it to conduct an electric current?a. acidb. base    c. ionsd. molecules
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Biochemistry Mathematics

05/26/21

Need help with math problem
You are living happily in your 1000 cubic meter home, your child brings home a single Tribble from the planet trubble at noon on the first day of the year if triple-double every half an hour how... more
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Biochemistry Math Science Biology

05/26/21

If you were doing recombinant DNA with animals, why would you include a gene for GFP (green fluorescent protein) rather than AMP (ampicillin resistant)?
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Biochemistry Science Biology Chemistry

05/26/21

Chemistry question please if anyone can help I really need it
___NH3+___O2----> ____ NO +____H2O In an experiment 5.03g of NH3 are allowed to react with 8.78g of O2 . Write the formula of the limiting reagent ANSWER ____ 2 How many grams of NO are formed... more
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05/25/21

its urgent help with chemistry plz

Consider the equation      2 C2H6 +  7 O2 --->  4 CO2 +  6H2OHow many grams of H2O are produced from 268.5 grams of C2H6 ?
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