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Gwar [14]
3 years ago
11

What has 20 electrons in 44 Mass

Chemistry
2 answers:
nadya68 [22]3 years ago
6 0

It would be Calcium: Ca

nadya68 [22]3 years ago
4 0

We can tell which atom has 20 electrons by looking on the periodic table. If we look at number 20 (the atomic number shows how many electrons and protons an atom has) it is Calcium (symbol Ca).

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Give another mixture of liquids that is separated on an industrial scale by fractional
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If you have 6.25g of O2, how many moles of H2O are produced?
denis23 [38]

Answer:

0.4 moles of water produced by 6.25 g of oxygen.

Explanation:

Given data:

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Moles of water produced = ?

Solution:

Chemical equation;

2H₂ + O₂  → 2H₂O

Number of moles of oxygen:

Number of moles = mass/ molar mass

Number of moles = 6.35 g/ 32 g/mol

Number of moles = 0.2 mol

Now we will compare the moles of oxygen with water:

                    O₂          :          H₂O

                     1            :            2

                   0.2          :        2×0.2 = 0.4 mol

0.4 moles of water produced by 6.25 g of oxygen.

8 0
3 years ago
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