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What is the most important difference btw the theoretical and observed Ramachandran plot?
A buffer solution contains 0.10 mol of acetic acid and 0.13 mol of sodium acetate in 1.00 L. What is the pH of this buffer?
A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 73.4 kj of heat. Before the reaction, the volume of the system was 7.40L .
The following three solutions are mixed: 90.0mL of 0.110M Na2SO4 , 45.0mL of 0.250M ZnCl2 , and 100.0mL of 0.20M Ba(CN)2. What ionic compounds will precipitate out of solution? Express as a chemical formula.
Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N2 + 3H2 >> 2NH3 If the reaction yield is 87.5% , how many moles of N2 are needed to produce 3.00 mol of NH3?
In a plot of [S]iVs/Vi versus [1.031]x+s,fVf/Vi, the slope and y-intercept were 1.031 mV/mM and 0.06 mV, respectively. Calculate the concentration of the cocaine metabolite in the sample (2 s.f.) in mM.
A 2.000-L flask was filled with 0.0393 mol SO2 and 0.0197 mol O2. At equilibrium at 907 K, the flask contained 0.0299 mol SO3. How many moles of each substance were in the flask at equilibrium
Determine if a molecule (or ion) is polar or non-polar, you must determine two factors.
The carbon dioxide will be generated by reacting solid sodium bicarbonate (NaHCO3) with a solution of acetic acid (CH3COOH) as follows: NaHCO3(s) + CH3COOH(aq) ? H2CO3(aq) + CH3COO-(aq) + Na+(aq)
cake alum aluminum sulfate is commonly used to purify sewage. what mass of precipitate aluminum hydroxide forms when
Consider an aluminum atom to be a sphere with radius equal to 143 pm and calculate the volume actually occupied by the atoms in your aluminum cylinder
Cannot be determined from the information provided. 9. Starting with the initial concentrations provided in the question above, what will be the equilibrium concentration of CO2? a) 1.6 M b) 1.8 M c) 2.0 M d) 2.2 M 10. What is KC for this process ..
Compute the pH of the buffered solution prepared. State the net ionic equation for the neutralization reaction that takes place when 2.0mL of 1.00M LiOH is added to the buffered solution explained in part a., and then calculates the pH of the buff..
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