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Question- What would be the vapor pressure of water at 97 degrees C above a solution made by dissolving 68.86 of copper (II) nitrate, Cu(NO3)2, in 282.4 g of water? The vapor pressure of pure water at this temp is 682.1 mmHg. Assume complete dissociation of solute.
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For the following electrochemical cell Cu(s)|Cu2 (aq, 0.0155 M)||Ag (aq, 1.50 M)|Ag(s) write the net cell equation. phases are optional. do not include the concentrations. Calculate the following values using standard potentials as needed.
Problem- There are two (of four) key reasons why aldehydes are more reactive than ketones. What are these two reasons. Explain why each of these results in greater reactivity of aldehydes.
assume that you have 125and 10 ml pipets and a 25mlvolumetric flask. describe in detail how you would prepare asolution
Question- Boric acid has pKa=9.23. What are the equilibrium concentrations of each species in .115M H3BO3 solution
Acid rain with a pH as low as 1.5 has been recorded in West Virginia. What is the H3O+ concentration in this acid rain and how many grams of HNO3 must be dissolved to make 25L of solution that has a pH of 1.5
Problem- What is the formula and charge of the ion(s) responsible for the solution being acidic or basic? Type your answer using the format Na1+ for Na1+ or SO42- for SO42-.
When comparing solutions of equal concentration, what is the relationship between the PH of an acid solution and the acid Ka
a gasoline additive used to boost octane ratings, delta H f has = -313.6 kJ/mol. C5H12O (l) + 15/2 O2 (g) ---> 5Co2 (g) + 6 H2O (l) Calculate its standard heat of combustion in kilojoules.
What product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid, assuming that it reacts by the same mechanism as the trans acid
An excess of the reagent 2,3-dimercapto-1-propanol was then added to displace the EDTA from zinc. Another 29.2 mL of Mg2+ were required for reaction with the liberated EDTA. Calculate the molarity of Ni2+ and Zn2+ in the original solution.
A lactic acid/lactate ion buffer solution contains 0.44M HC3H5O3 and 0.90 M C3H5O3^-, respectively. The K a value of lactic acid is 1.4times 10^-4. Calculate the pH of this buffer.
In addition, suppose that each activated adenylyl cyclase catalyzes the conversion of 40 ATP molecules to cAMP per second. (Assume that each G protein activates a single unique adenylyl cyclase.) Calculate the number of moles of cAMP that are prod..
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