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A quantity of 1.435 g of naphthalene (C10H8), a pungent-smelling substance used in moth repellents, was burned in a constant-volume bomb calorimeter. Consequently, the temperature of the water rose from 20.28C to 25.95C. If the heat capacity of the bomb plus water was 10.17 kJ/C, calculate the heat of combustion of naphthalene on a molar basis; that is, find the molar heat of combustion.
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
Problem- Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
Calculate the boiling point (in Celsius) of 25% of an antifreeze in water. The antifreeze is a covalent compound with a molar mass
If a solution of Na2CO3 has a pH of 10. The CO32- on is the conjugate base of the HCO3- ion. State the net ionic equation for the reaction which makes a solution of Na2CO3 basic.
groundwater containing 60 mgl of co2 at 10oc is pumped through a spray nozzle aerator and the co2 concentration is
write out the mechanism for alcoholysis of acetyl chloride with isopropyl alcohol. will steric factors slow this reaction down in a way
Solve an equilibrium problem (using an ICE table) to calculate the pH of each of the following solutions. .14 M CH3NH2
Explain how many monochloro derivatives, including stereoisomers can be formed in the chlorination of 1-bromobutane
Calculate the temperature in Kelvins of 10.2 grams of CO2, an Ideal Gas, trapped in a .0047 L container with a pressure of 300,000 Pa
Write a balanced molecular (basic), ionic and net equation to answer the question below for the following reactants:
EXPLAIN why at low temperatures, e.g. -80 °C, when HCl is added to 1,3-butadiene the major product is 3-chloro-1-butene. c) EXPLAIN why at +80 °C when HCl is added to 1,3-butediene the major product is 1-chloro-2-butene.
Explain how many grams of copper will be plated out by a current of 2.3 A applied for 25 minutes to a 0.50 M solution of copper(II) sulfate
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