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Kn1 knowledge and understanding of acid and base reactions and pH, and of writing chemical formulas and equations and molar calculations.
The minimum daily requirement for vitamin C is 60 mg per day. What percentage of this requirement is in one cup (200 mL) of fresh and week-old orange juice?
How many coulombs would be required to electroplate 35.0 grams of chromium by passing an electrical current through a solution containing CrCl3?
You have 500.0 mL of a buffer solution containing 0.20 M acetic acid (CH3COOH) and 0.30 M sodium acetate (CH3COONa).
Estimate the useful range for each indicator, from a minimum to maximum pH. The range usually spans 1.5 to 2 pH units.
Explain why it is not necessary to know the exact concentration of bromothymol blue in the solution.
The fertilizer ammonium sulfate [(NH4)2SO4] is prepared by the reaction between ammonia (NH3) and sulfuric acid:
What can you conclude about the acidity of exhaled breath. Propose a hypothesis to explain the acidity of exhale breath.
Draw the cell, clearly mark all the components, and show the anode and the cathode, and the direction of the flow of electrons.
It has a Ka equal to 6.3 x10-6. Its un-ionized form is red and its anionic form is yellow. What color would a methyl red solution have at pH = 7.8?
State three examples each of acids, bases, and salts commonly used in therapeutic processes. From the examples you state, select one acid
What is the pH of a solution that is 3.0×10−9 M in NaOH? Would I do the log (3.0 x 10-9) and then subtract that number from 14 in order to get the pH?
Write on types of reactions. Precipitation, acid-base, and oxidation-reduction reactions. Find and discuss and example of each reaction type .
In an experiment to test how well methyl alcohol works as an antifreeze, a technician collected a sample of 175.0 mL of this liquid.
Under constant-pressure conditions a sample of hydrogen gas initially at 88 degrees C and 9.6 L is cooled until its final volume is 3.4 L.
Describe the changes in clarity and viscosity of a nuclear suspension that occurs upon the addition of Sodium Dodecyl Sulfate (SDS)?
First do rough titration by adding KMnO4 2mL at a time in order to quickly find range in which endpoint is reached.
Aluminum metal reacts with bromine gas to produce aluminum bromide.
Which one is a weak monoprotic acid: benzoic acid, perchloric acid, oxalic acid ,sulfurous acid?
Show with the aid of a form of the Nernst equation that when using a pH sensitive glass electrode and reference electrode that the measured potential.
How many grams of sodium acetate should be dissolved in 1.00 L of 1.150 M acetic acid? Ka acetic acid = 1.7 x 10-5
After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps.
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals
If it took 25.0ml of 0.102 M Ag+ to reach the equivalent point in this titration, what is the mass percentage of arsenic in the pesticide?
What volume of 0.050 M K2Cr2O7 would be required to completely oxidize the organics in a 50.0 mL sample of effluent?