1,722 Answered Questions for the topic biochemistry

04/29/20

If 1 mole of each of the solutes listed below is dissolved in 1 L of water, which solute will have the greatest effect on the vapor pressure of its respective solution?

Which is the correct answer?A) C6H12O6B) CaSO4C) KBrD) MgCl2
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04/29/20

Calculate the boiling point elevation of a solution containing 43.8 g of glucose (C6H12O6) dissolved in 359.9 g of water. Calculate the freezing point depression for the same solution.
boiling point elevation = _____ degrees Celsiusfreezing point depression = ____ degrees Celsius
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04/28/20

A scientist measures the standard enthalpy change for the following reaction to be 593.6 kJ:
A scientist measures the standard enthalpy change for the following reaction to be 593.6 kJ:2H2O(l)  2H2(g) + O2(g)Based on this value and the standard enthalpies of formation for the other... more
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04/28/20

The standard enthalpy change for the following reaction is -1.39×103 kJ at 298 K. 
The standard enthalpy change for the following reaction is -1.39×103 kJ at 298 K.  3 Mn(s) + 2 O2(g)Mn3O4(s)    ΔH° = -1.39×103 kJ  What is the standard enthalpy change for the reaction Mn3O4(s)3... more
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04/28/20

what is the standard enthalpy change for the reaction:
Given the standard enthalpy changes for the following two reactions:(1) 2Ni(s) + O2(g)2NiO(s)......H° = -479.4 kJ(2) 2Zn(s) + O2(g)2ZnO(s)......H° = -696.6 kJwhat is the standard enthalpy change... more
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Biochemistry Biology Microbiology

04/28/20

chi square question for biology

Chi SquareConsider the scenario where one parent is type AB blood and the other parent is heterozygous for type B blood. A sample of 150 couples collectively produced a total of 38 children... more
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04/28/20

What is the value of H for the chemical equation givenWhat is the value of H for the chemical equation given
The reaction of  carbon monoxide(g) with hydrogen(g) to form methane(g) and water(g) proceeds as follows:CO(g) + 3H2(g) CH4(g) + H2O(g) When 7.45 grams of CO(g) react with... more
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Biochemistry Biology Microbiology

04/28/20

meiosis questions for biology

Meiosis  After the first Meiotic division, are the daughter cells haploid, diploid, or polyploid? After the second Meiotic division, are the daughter cells haploid or diploid? Which 2 processes in... more
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Biochemistry Biology Microbiology

04/28/20

I need help with mitosis questions for biology

help me step by step on these questions I am confused on the concept for these questions for mitosis can I have someone explain these questions In which phase of interphase does DNA... more
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Biochemistry

04/28/20

help! not sure how to do this problem
Liquid octane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . If 1.79g of water is produced from the reaction of 3.4g of octane and 6.8g of oxygen gas,... more
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04/27/20

Gases Liquids and Solids 4.27.20
A solution of ethanol CH3CH2OH and water that is 10.% ethanol by mass is boiling at 98.7°C. The vapor is collected and cooled until it condenses to form a new solution.Calculate the percent by mass... more
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04/26/20

Gases Liquids and Solids

A certain liquid X has a normal freezing point of 5.50°C and a freezing point depression constant = Kf 1.83·°C·kgmol−1. A solution is prepared by dissolving some iron(III) chloride (FeCl3)... more
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Biochemistry

04/26/20

i need help with this problem
Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water  and carbon dioxide  chemically react to form the simple sugar glucose  and oxygen... more
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04/25/20

Precipitation General Chemistry Question
Is a precipitate expected to form when 50.0 mL of 0.0010 M BaCl2 is added to 50.00 mL of 0.00010 M Na2SO4? Ksp for barium sulfate is 1.1 x 10-10.
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04/25/20

Calculating Solubility from the Ksp
Calculate the molar solubility of calcium sulfate given Ksp = 2.4 x 10-5
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04/25/20

Calculating Ksp from Solubility

The molar solubility of Pb3(AsO4)2 is 3.34x10-8 mol/L. Calculate Ksp.
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04/22/20

General Chemistry Acids and Base Question

What is the hydroxide ion concentration of a KOH solution that has a pH of 9.20?
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04/21/20

CHEMISTRY DECOMPOSITION

For the decomposition of nitramide in aqueous solution at 25°C, the rate of the reaction is determined by measuring the appearance of N2O. NH2NO2(aq)=N2O(g) + H2O(l)At the beginning of the reaction... more
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Biochemistry Chemistry Chem

04/21/20

What Volume of a 0.53 M HCl solution is required to neutralize 16.5 mL of a .124 M Ca(OH)2 Solution?
What Volume of a 0.53 M HCl solution is required to neutralize 16.5 mL of a .124 M Ca(OH)2 Solution?
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04/20/20

Compare the solubility of silver chromate in each of the following aqueous solutions:
Compare the solubility of silver chromate in each of the following aqueous solutions: Clear All 0.10 M KNO3 0.10 M NH4CH3COO 0.10 M K2CrO4 0.10 M AgCH3COO More soluble than in pure... more
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04/20/20

The maximum amount of silver chloride that will dissolve in a 0.104 M silver nitrate solution is

The maximum amount of silver chloride that will dissolve in a 0.104 M silver nitrate solution is  ____ M.
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04/20/20

Calculate the solubility of CaCO3 (a) in pure water and (b) in a solution in which [(NH4)2CO3] = 0.216 M.
Calculate the solubility of CaCO3 (a) in pure water and (b) in a solution in which [(NH4)2CO3] = 0.216 M. Solubility in pure water =      M Solubility in 0.216 M  (NH4)2CO3 =     M
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04/20/20

Solid sodium carbonate is slowly added to 75.0 mL of a 0.0611 M lead acetate solution. The concentration of carbonate ion required to just initiate precipitation is

Solid sodium carbonate is slowly added to 75.0 mL of a 0.0611 M lead acetate solution. The concentration of carbonate ion required to just initiate precipitation is _____ M.
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04/20/20

The solubility of Fe2S3 is measured and found to be 2.16×10-16 g/L. Use this information to calculate a Ksp value for iron(III) sulfide.

The solubility of Fe2S3 is measured and found to be 2.16×10-16 g/L. Use this information to calculate a Ksp value for iron(III) sulfide.Ksp = 
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04/16/20

General Chemistry Lab Question 4.16.20
In lab you are asked to perform an experiment that requires 100.00 mL of a 0.350 M potassium chloride solution. All you have in the lab though is a 0.750 M potassium chloride solution. Explain (in... more
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