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SashulF [63]
3 years ago
8

When sugar is added to a glass of water, it dissolves. How do you know this?

Chemistry
1 answer:
strojnjashka [21]3 years ago
8 0

Answer:

Use a spoon, scoop up a small amount of the syrup. When you do, you won't be able to see any sugar crystals in the liquid which is water.

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1 Calcium carbonate breaks down on heating to produce calcium oxide and carbon dioxide gas.
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Answer:  See below

Explanation:

1.  a)  0.15 moles calcium carbonate  (15g/100g/mole)

   b)  0.15 moles CaO  (molar ratio of CaO to CaCO3 is 1:1)

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2. a)  0.274 moles Na2O  (17g/62 grams/mole)

   b)  46.6 grams NaNO3  (2 moles NaNO3/1 mole Na2O)*(0.274 moles Na2O)*(85 g/mole NaNO3)

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2 years ago
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D

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