1,708 Answered Questions for the topic biochemistry

10/23/20

Please help me thx u
Baking soda is a white powder used for baking or cleaning. When you mix baking soda, NaHCO3, with vinegar, C2H4O2, you get a clear colorless liquid and bubbles of CO2. Specify the phase of each of... more
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Biochemistry Chemistry

10/23/20

titrate problems; please answer 4 and 5
A solution of 0.04M hydroiodic acid is utilized to titrate 250mL of 7.0x10-2M potassium lactate.What is the pH of the initial potassium lactate solution? pH=8.3 What volume of HI needs to be added... more
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10/22/20

calorimeter experiment
when learning about coffee-cup calorimetry, i have 3 questions regarding it that have been making me a bit confused.when using a coffee-cup calorimeter in an experiment, why is it important to... more
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10/21/20

coffee-cup calorimeter
When doing an experiment using a coffee-cup calorimeter, NaOH, and Acetic Acid: If some heat was lost to or gained from the surroundings what would happen to the measured ΔT? How does this affect... more
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10/21/20

Oxidative Phosphorylation?
Can someone explain the following items in the context of oxidative phosphorylation, along with explaining the process? Mitochondrial matrix Intermembrane space Inner mitochondrial membrane NADH... more
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10/17/20

Question regarding bcaa branched chain amino acids?
I recently consumed high amounts of soya chunks for muscle growth while resistance training but recently i am suffering from depression. I recently red bcaa in high amounts blocks the pathways that... more
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10/17/20

Percent Yield of Carbon Dioxide?
Liquid octane CH3CH26CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2and gaseous water H2O. If 46.1g of carbon dioxide is produced from the reaction of 63.97g of octane... more
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10/17/20

percent yield of water
Aqueous hydrochloric acid HCl reacts with solid sodium hydroxide NaOH to produce aqueous sodium chloride NaCl and liquid water H2O. If 0.321g of water is produced from the reaction of 2.9g of... more
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10/17/20

temperature change
If the volume of  and NaOH were kept at 50 mL but the concentration was doubled to 2 M, the observed temperature change woulda. doubleb. halfc. be the samed. don't know
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10/17/20

Measured Temperature Change
If the volume of  and NaOH is doubled (100 mL) while keeping the concentration the same (1 M), the measured temperature change will beaDouble since more mols are reactingbSame since both qsol and... more
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10/17/20

What is the enthalpy change for this reaction?
When 50 mL of 1.00 M  was added to 50 mL of 1.00 M NaOH in a coffee-cup calorimeter, the temperature of the resulting solution increased by 4.5 . The enthalpy change for the neutralization isa.... more
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10/17/20

Find the DeltaH?
What is ΔHneut when 50.0 mL of 1.0 M HCl react with 40.0 mL of 1.0 M NaOH to produce a temperature change of +5.6 ? ​[math] d{soln} = 1.05 g/mL, c{sol} = 4.20 J/g. K
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10/16/20

Coffee-Cup calorimeter? Please check my answer! :)
When a neutralization reaction is carried out in a coffee-cup calorimeter, the temperature of the solution after reaction, Tf, would beaCannot determinebLowercThe... more
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10/16/20

Temperature reading.
You will be performing your experiment in a coffee-cup calorimeter and measure temperature changes upon reaction in the calorimeter. Given that ΔHneut = -56 kJ/mol, for a neutralization reaction of... more
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10/16/20

Temperature change? Check my answer please.
Predict how the temperature change that you measure for 25 mL of 1 M NaOH added to 25 mL of 1 M hydrochloric acid compare to the temperature change when 50 mL of 1 M NaOH is added to 50 mL of 1 M... more
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10/16/20

Predict the temperature change?
Predict how the temperature change that you measure for 25 mL of 2 M NaOH added to 25 mL of 2 M hydrochloric acid compare to the temperature change when 25 mL of 1 M NaOH is added to 25 mL of 1 M... more
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10/16/20

Which of the following reactions will lead to the largest temperature change in the calorimeter?
Which of the following reactions will lead to the largest temperature change in the calorimeter?a25 mL of 2 M NaOH added to 20 mL of 2 M HCIb50 mL of 1 M NaOH to 25 mL of 1 M HCIc25 mL of 2 M NaOH... more
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Biochemistry

10/15/20

Biochemistry COVID question.

I need an in depth answer to this. I am stuck at this and need help . Compare the sequences of S proteins between SARS-CoV, SARS-CoV2 and MERS-CoV (start by using the “Nature” paper with S protein... more
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Biochemistry Science Biology Anatomy

10/14/20

Creating Dichotomous Keys
I need help making a dichotomous key for archaea and protists. It can be for specific species or for groups/subgroups of the kingdoms.
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10/14/20

Calculating heat of reaction from bomb calorimetry data?
A student runs two experiments with a constant-volume "bomb" calorimeter containing 1500.g of water.First, a 7.000g tablet of benzoic acid (C6H5CO2H) is put into the "bomb" and burned completely in... more
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Biochemistry Science Biology Ecology

10/14/20

Dichotomous Key
I need help making a dichotomous key for: archaea and protists. It can be for specific species or for groups/subgroups of the kingdoms.
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10/14/20

mixture? reactions?
A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant... more
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10/14/20

Reactions? One question.
A chemist measures the energy change ΔH during the following reaction:CH4(g) + 2O2(g) --> CO2(g) + 2H2O(l) DeltaH: -882. kJUse the information to answer the following questions. Is the... more
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10/13/20

reactions, confused
A chemist measures the energy change during the following reaction:2NH3(g) --> N2(g) + 3H2(g) DeltaH: 160.kJUse the information to answer the following questions. Is the reaction endo- or exo-... more
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10/13/20

MIXTURE Reactants
A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant... more
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