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A buffer solution is made by dissolving 0.45 moles of a weak acid (HA) and 0.33 moles of KOH into 800 mL of solution. What is the pH of this buffer? Ka = 5.9 × 10-6 for HA.
How many atoms of hydrogen are in 1 molecule of water, H2O
a sample of H2O with a mass of 46.0 grams has a temperature of -58.0 C. how many joules of energy are necessary to heat the steam from 100.0 degrees Celcius to 114.0 degrees celcius if the specific heat of steam 2.01J/g degrees celcius.
If the density of ethyl alcohol is 0.789 g/ml, how many quarts can be produced by the fermentation of 100.0 lbof sugar?
What is the first step in the reaction sequence of these Aldol reactions under basic conditions?
Determine the mass of carbon dioxide (in g) produced from the complete combustion of 1.40×10-2 g of C6H10 with excess oxygen.
A solution contains 0.06054 M H3PO4 and 0.0386 M NaH2PO4. What volume of 0.05031 M NaOH is required to titrate 10.00 mL of this solution to the first end point
A particular Lake contains 10^10 liter of water. Due to acidification, the pH of the Lake is 5.00. It has been decided to add enough calcium carbonate to the lake to bring the pH to 6.00.
calculate the change in pH that occurs when 1.00 mmol of a strong acid is added to 100 mL of 0.0500 M HCl.
Explain using Hooke's law why the H-X stretches absorb higher frequency energy than C-X stretches. (X=C,N,O)
A 397 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 639 mmHg. Calculate the moles of Ar present
A. How many grams of can be produced from 4.40mol of Na B. How many grams of H2 are needed to produce 14.81g of Na C. How many molecules (not moles) of NH3 are produced from 8.22×10?4g of H2
Draw the organic product(s) of the reaction of p-methylbenzoic acid with aqueous sodium hydroxide
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