Chemistry Engineering Question:

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Fish in an aquarium require oxygen to live, which is usually done by pumping air into the fish tank using a mechanical pump. If all other things remain constant, the most effective transfer of oxygen to water comes from:

Chemistry Interview Question
Chemistry Interview Question

Answer:

1. small bubbles of air
2. large bubbles of air
3. bubbling of cold air
4. slow bubbling of air

Answer: A

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What is the pH of a solution with a hydronium ion concentration of 1 X 10-8 moles/dm3?Which of the following are NOT carbonate minerals: