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Sergio [31]
2 years ago
11

2Li+2H2O—>2LiOH+H2

Chemistry
1 answer:
vova2212 [387]2 years ago
8 0

Explanation:

Please find the Measures of Center and construct a histogram AND find the 5-number summary and construct a box-n-whisker plot for the numbers below.

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Calculate the molar mass of aluminum oxide (Al2O3). Express your answer to four significant figures.
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Answer:

102.0 g/mol.

Explanation:

Aluminum oxide  or Al2O3 is a chemical compound composed of 3 Oxygen and 2 aluminum atoms. Naturally, it is present in the form of mineral corundum in crystalline polymorphic forms. It holds significant importance in the preparation of Aluminium metal that is used as a refractory material.

To calculate the molar mass of Aluminum oxide, we will add the molar mass of 2 Al and 3 O atoms.

                         Since molar mass of Al is: 26.98 g

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                                   Molar mass of Al2O3

                                  =   (26.98)2 +  (16.00) 3

                                     =    53.96 +   48

                                       = 101.96 g/mol

Since it is mentioned in question to round off the answer upto 4 significant figures, it will make the answer: 102.0 g/mol.

Hope it help!

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Is the flame test a test for the cation (metal listed first) or the anion (nonmetal listed second)?
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the answer is metal  hope it helps

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