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Say you are presented with two beakers, beaker A and beaker B, each containing a white, powdery compound.
a. From your initial observations, you suspect that the two beakers contain the same compound. Describe, in general terms, some experiments in a laboratory that you could do to help prove or disprove that the beakers contain the same compound.
b. Would it be easier to prove that the compounds are the same or to prove that they different? Explain your reasoning.
c. Which of the experiments that you listed above are the most convincing in determining whether the compounds are the same? Justify your answer.
d. A friend states that the best experiment for determining whether the compounds are the same is to see if they both dissolve in water. He proceeds to take 10.0 g of each compound and places them in separate beakers, each containing 100 mL of water. Both compounds completely dissolve. He then states, "Since the same amount of both substances dissolved in the same volume of water, they must both have the same chemical composition." Is he justified in making this claim? Why or why not?
A room temperature aqueous solution is 0.10 M in zinc acetate, 0.50 M in strontium acetate and 15.2 M in nickel (II) acetate. At what concentration of carbonate
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Which is the stronger base, HSO4- or H2O? b. Which is the stronger base, H2O or OCl-?
If you used 8400 kilojoules you expend in energy in one day to heat 50,000 g of water to 20 degrees C, what would be the irse in temperature? What would be the new temperature of the water?
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What is the pH of the a buffer solution containing 0.10 moles of acetic acid and 0.13 moles of sodium acetate in 1.0 L after adding 0.02 moles of KOH?
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what will the concentration be after 3.00 minutes? B)A zero-order reaction has a constant rate of 3.40×10^?4 M/s . If after 80.0 seconds the concentration has dropped to 3.00×10^?2 M , what was the initial concentration?
he sample required 5.5 mL of 0.0019 M NaOH to titrate the sample to neutrality. What was the pH of the gastric juice?
What is the mass in grams of 2.75 moles of CH4, How many moles are in 365 grams of K2SO4.
A 0.75-L bottle is cleaned, dried, and closed in a room where the air is 24°C and 50.% relative humidity (that is, the water vapor in the air is 0.5 of the equilibrium vapor
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