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Gold cannot displace copper from copper sulphate solution. This is because gold is very much less reactive than that of copper hence it cannot replace copper from copper sulphate solution and form gold sulphate.
No displacement reaction will take place because gold is less reactive than copper.
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Different radioisotopes have different half-lives. For example, the half-life of carbon-14 is 5,700 years, the half-life of uranium- 235 is 704 million years, the half-life of potassium- 40 is 1.3 billion years, and the half-life of rubidium-87 is 49 billion years. a. Why wouldn't you use an isotope with a half-life similar to that of carbon-14 to determine the age of the Solar System? b. The age of the universe is approximately 14 billion years. Does that mean that no rubidium- 87 has decayed yet?
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A sample solution containing sulfate ions (SO42−) was analyzed and was found to contain 5 mol of sulfate ions (SO42−).
Calculate the equivalent of sulfate ions (SO42−) present in the solution.
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What mass of copper(II) hydroxide would be produced when a solution containing 6.8g of OH- ions reacts with a solution containing excess Cu2+ ions?
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A sample solution containing sulfate ions (SO42−) was analyzed and was found to contain 3 mol of sulfate ions (SO42−).
Calculate the equivalent of sulfate ions (SO42−) present in the solution.
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