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when 50. grams of ethane gas is burned completely in oxygen. Carbon dioxide and water vapor are produce. How many mole of water vapor are produced?
The balanced chemical reaction for the titration performed in this lab demonstration is: NaCOOH(aq)+NaOH(aq)=Na(CH3COO)(aq)+H2O(l). A basic solution has positive ions and OH- ions like Na+ and OH-.
An inflated balloon has a volume of 0.55 L at sea level (1 atm) and is allowed to rise to a height of 6.6 km, where the pressure is about 0.40 atm.
The Kb of methylamine, CH3NH2, is 4.2 x 10-4. Calculate the pH of a solution of 0.431 M methylamine.
The activation energy of a certain reaction is 45.3kJ/mol . At 24{~}^{\circ}\rm C , the rate constant is 0.0160s^{-1} . At what temperature in degrees Celsius would this reaction go twice as fast?
Water's bad smell containing hydrogen sulfide H 2 S that can be removed by the action of Cl considering the given reaction.
What molarity of aqueous aluminum sulfate solution can be expected to show the same conductivity as 0.030 M CaSO4 at 20,000 units?
A Diels-Alder reaction of 2,5-dimethylfuran and maleic anhydride gives a compound A that undergoes acid-catalyzed(H2SO4) dehydration to give 3,6-dimethylphthalic anhydride
What is the theoretical amount of oxygen required for the fuel mixture? What amount of air is added to the fuel mixture?
Write the chemical equation for the dissociation of the salt into its ions. Write the expression for Ka or Kb and give the value of Ka or Kb 1. 1.0M NaC2H3O2 pH=7.45 2. 1.0M NaHCO3 pH=8.60 3. 1.0M Na2CO3 pH=11.62 4. 1.0m NH4Cl pH=3.98
Which of the following statements is true about p-type silicon semiconductors? a. It is produced by doping Si with P or As. b. It does not conduct electricity as well as pure Si. c. Electrons are the mobile charge carriers. d. All are true. e. Non..
Provide structures consistent with the following molecular formulae and spectral data, and assign spectral peaks. Write your structures and tables on a sheet of paper.
A sample of pure oxygen gas has a pressure of 795 torr. What is the pressure of the oxygen in units of atmospheres. A) 0.795 atm B) 1.05 atm C) 0.604 atm D) 0.760 atm E) 1.01 atm
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