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Problem- In an experiment, the student placed a test tube containing a pink equilibrium mixture on a hot plate. The solution began to boil and turned blue. A second test tube with the same pink equilibrium mixture was placed in an ice bath. The solution turned a slightly lighter pink.
Part a- Is the forward reaction of [Co(H2O)6]Cl2(pink) --> COCl2(H2O)2 (blue) +4H2O equilibrium exothermic or endothermic?
Part b- Briefly define how the student's observations support your answer to (a.)
What is the mechanism (complete with electrons and arrows) of the dehydration
You are on a backpacking trip and need to make a fire. You have some batteries and a piece of foil from some gum. These should be sufficient to get the fire going.
if 105 of fluorine-18 is shipped at 800 a.m. how many milligrams of the radioisotope are still active if the sample
The first equivalence point for the titration of 0.2567 grams of a weak acid is reached when a volume of 26.80mL of 0.0510 M NaOH(aq) has been added. What is the molar mass of the acid?
sodium peroxide reacts with water to form sodium hydroxide and oxygen. write a balanced equation for the reaction and
what is the empirical formula for a substance if a 1.000 g sample of it contains .262 grams of nitrogen 0.075 grams of hydrogen and .663 grams of chlorine?
question 1 how many moles of carbon dioxide are contained in 7.75 grams of carbon dioxide.question 2 how many moles of
A mixture contains H2 at 325torr pressure, N2 at 475torr pressure, and O2 at 650torr pressure. What is the total pressure of the gases in the system
The vapor pressures of pure benzene and pure toluene at 25 C are 94.2 torr and 28.4 torr, respectively. Assuming ideal behavior
You need to produce a buffer solution that has a pH of 5.50. You already have a solution that contains 10 mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution. T..
when water freezes its volume is increased by one-eleventh. in other words the volume of ice equals the sum of the
What specific properties are mentioned in the organization of the real periodic table? How do they relate to the current model (pages 192 - 193)?
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