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1. Calculate the [H+] for a. Black coffee, with a pH of 5.0
b. A solution with a pH of 8.5
2. Calculate the pH of solutions having the following [H+]:
a. 0.035 M
b. 2.0 x 10-5 M
3 A solution of ethyl alcohol and benzene is 40% ethylalcohol by volume. Write a conversion factor statement that describes that mixture.
4. Identify the conjugate acid - base pairs in the following equations;
H2PO4- + OH- HPO42- + H2O
5. What are two examples of;
a. strong electrolytes
b. Weak electrolytes
Number of unpaired electrons in the nitrogen atom
Explain the reactions catalyzed by enzymes in the first two steps of fructose metabolism in the liver include: the substrates acted on, the enzyme catalyst, the products generated
how many grams of gold would plate on the metal used for the medallion? Explain what you are thinking as you show your calculations.
The molar heat capacities of Iron and Gold are 24.19 J/mol C and 25.41 J/mol C respectively. What is the final temperature of the water and pieces of metal?
a certain liquid has dH(vap)=26.0kJ/mol. calculate the q,w,dH and dU when 0.50 mol is vaporized at 250K and 750torr
A hydrogen atom with an electron in its ground state interacts with a photon of light with a wavelength of 1.22 × 10?6m. Could the electron make a transition from the ground state to a higher energy level
What concentration of NOCL must be put into an empty 4.00L reaction in order that the equilibrium concentration of NOCL be 1.00M? the arrow goes both ways
Problem- Calculate the pH and pOH of a carbonated soft drink that is 0.0035 M carbonic acid solution. Assume that there are no other acidic or basic components.
Why can a first nitration be done at 0 degrees Celsius but the ice bath is removed to complete the reaction in a dinitration
Calculate [Ag+] present in a solution at equilibrium when concentrated NH3 is added to a 0.01M solution of AgNO3 to give an equilibrium concentration of [NH3] = 0.2M.
A mixture of 1mL of saturated thiourea as well as 1mL of saturated urea is mixed with 1mL of 1 M silver nitrate. Explain what the products of this reaction are and give a balanced formula.
Density of liquid methanol, Determine the density of liquid methanol in (lb/ft^3) and convert heat capacity, thermal conductivity and viscosity from SI units to English Units.
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