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Would the pH of a 0.10 M formic acid (HCOOH) solution be higher or lower than the pH of a solution containing 0.10 M formic acid and 0.10 M sodium formate (HCOONa)? Explain.
Calculate the mass of Sodium Nitrate required to prepare 50cm3 of 0.2 moll-1 solution
Mesitylene is a compound consisting only of C and H. If you burn 0.115 g of the compound, and find that it produces 0.379 g of CO2 and 0.1035 g of H2O.
a metal weighing 50.0g absorbs 220.0 J of heat when its temperature increases by 120.0 degrees celsius. what is the specific heat of this metal?
if you had 21 moles of oxygen and 8 moles of ethane, what is the most moles of carbon dioxide possible?
A sample of N2 gas occupies 2.40L at 20 degress cecius. if the gas is in a container that can contract or expand at constant pressue, at what temperature will the N2 occupy 4.80 L?
Calculate the difference between its molar Gibbs energy and that of an ideal gas in the same state.
Determine both delta G and K when X represents CL2 and I2. Which reaction(s) is/are spontaneous. Which reaction happens to the greatest extent?
"A sample of a particular radioisotope is placed near a Geiger counter, which is observed to register 160 counts per minute. Eight hours later the detector counts at a rate of 10 counts per minute. What is the half-life of the material?"
What is the molality if a solution in which 15 g of I2 is dissolved in 500. g of alcohol?
What is the pH at the equivalence point for the titration of 0.20 M HCl with 0.20 M NH3?
An unknown Cu2+ sample gave an absorbance of 0.262 in an atomic absorption analysis. Then 1.00 ml of solution containing 100.0 ppm Cu2+ was mixed with 95.0 ml of the unknown, and mixture was diluted to 100.0 ml in a volumetric flask.
Calculate the pH when 2.00 mL of 0.0275 M NaOH are added to 50.0 mL of buffer solution.
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