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Explain what is the pH of the solution when 18.30 mL of 0.137 M trisodium hemimellitalate (trisodium benzene 1, 2, 3, tricarobxylate) is mixed with 25.00 mL of 0.274 M HNO3 (to two d.p.)?
pKa1= 2.88, pKa2=4.75
A 0.1036 g sample containing only BaCl2 and NaCl is dissolved in 50 mL of distilled water. Titration with 0.07916 M AgNO3 requires 19.46 mL to reach the endpoint. What is the % by wt. of NaCl in the sample
A 5.00g sample of liquid water at 25.0 degrees Celcius is heated by the addition of 84.0 J of energy. The final temperature of the water is _________ degrees Celcius. The specific heat capacity of liquid water is 4.18 J/g-K
The combustion of 0.4196g of hydrocarbon releases 17.55kJ of heat.the masses of the products are CO2=1.419g and H20 =0.290g what is the empirical formula of the compound. If the approximate molar mass of the compound is 76g/mol calculate its stand..
What is the difference between the voltage produced by a cell and the current produced by a cell?
The value of Delta g for the conversion of 3-phosphoglycerate to 2-phosphoglycerate (2PG) is +4.4 kj/mol. If the concentration of 3-phosphoglycerate at equilibrium is 2.55 mM, what is the concentraction of 2 phosphoglycerate? assume a temperature ..
High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000) to about 60,000 (60,000,000)
Write a balanced chemical equation, with integer coefficients, for the complete combustion of C7H12
Which of the following terms define(s) an acid according to the Bronsted-Lowry theory?
Driving across Death Valley
When ammonia gas, NH3, is passed over hot liquid sodium metal, hydrogen gas, H2, is released and sodium amide, NaNH2, is formed as a solid product. What is the balancing Equation
For a certain reaction delta H=-76.8 and delta S=-217 If n=3 calculate E for the reaction at 25 degrees.
The professor's reasoning is good, because the color red is causing drivers of red cars to drive much faster than drivers of cars with other colors
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