What are referred to as ‘particles’ in cryo-EM of proteins?
In: Chemistry
if an ATP molecule is hydrolyzed (by two water molecules) all the way to AMP (and two Pi) in two steps, how many total kcal/mol of energy could be released? Explain.
Using this equation.
ADP + H2O -> AMP + Pi + 7.3 kcal/mo
In: Chemistry
A mixture initially contains A, B, and C in the following concentrations: [A] = 0.400M , [B] = 0.700M , and [C] = 0.700M . The following reaction occurs and equilibrium is established:
A+2B?C
At equilibrium, [A] = 0.210M and [C] = 0.890M . Calculate the value of the equilibrium constant, Kc.
Express your answer numerically.
In: Chemistry
1. Net ionic equationCr(OH)3+ HO2+-----given-----(CrO4)2+ + HO-
2. Cd⁄Cd2+(0.060mol/l) // Ag / Ag+(2.50mol/l)#
a)Overallreaction
b)Cell potential
c)Which one is the positive meta
In: Chemistry
1.
a) Account for the fact that there are four different types of H atoms (four non-equivalent H types) in propene.
b) Explain why the NMR spectrum of cyclohexane,below, at room temperature gives one broad peak for all 12 protons instead of two seperate peaks for the axial and equatorial hydrogens
In: Chemistry
In: Chemistry
Can someone explain to me why does increasing the electrolyte concentration can increase the electroplating rate/or metal deposit...? Take copper sulphate as an example. Better explanation with pics...And just don't go too far beyond the Faraday's law and please try to explain it in a more 'Chemistry' way. Thanks!
In: Chemistry
3. ADP-Glc pyrophosphorylase (AGPase) is a key enzyme in the biosynthesis of starch. Using AGPase as an example, describe how the regulation of this one enzyme can control the overall flux of carbon through starch biosynthesis in photosynthetic tissue.
In: Chemistry
Determine the equation for the best straight line for the calibration curve from the following set of absorbance/concentration (mg/100 mL) data: 0.96/0.0, 0.83/10, 0.66/20, 0.49/30, 0.36/40, 0, 19/50, 0.08/60.
What method did you use to obtain the equation for the best straight line, what is the value of Ao, and what are the numerical value and units of k?
In: Chemistry
What is the [OH-] of a 1x10-3 M solution of NH4Cl?
In: Chemistry
A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weights out 305.mg of oxalic acid(H2C2O4), a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in 250.mL of distilled water. The student then titrates the oxalic acid solution with her sodium hydroxide solution. When the titration reaches the equivalence point, the student finds she has used 69.4mL of sodium hydroxide solution. Calculate the molarity of the student's sodium hydroxide solution. Be sure your answer has the correct number of significant digits.
In: Chemistry
A student creates a buffer mixing 50. mL of 1.0 M Acetic Acid with 25 mL of 1.0 M Sodium Hydroxide. The buffer is then mixed with 10. mL of 2.0 M hydrobromic acid. What is the pH of the final solution?
The Ka of acetic acid is 1.8 x 10-5
In: Chemistry
Given the thermodynamic data in the table below, calculate the equilibrium constant (at 298 K) for the reaction:
2SO2 (g) + O2 (g) à 2SO3 (g)
In: Chemistry
Explain the energy changes at the molecular level when
liquid acetone is conferred to vapor at it's boiling
point
In: Chemistry
When either cis- or trans- 2 bromocyclohexanol is reacted with HBr, only the trans- 1,2- dibromocyclohexane is formed. Explain.
In: Chemistry