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Svetllana [295]
3 years ago
7

Please help me Thank you

Chemistry
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

A

Explanation:

A is the answer because it is explaining how wolves are ancestors of dogs

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4 Na + O2 → 2 Na2O<br><br> 6.79 moles of O2 will react to form how many moles of Na2O?
Nataly_w [17]

Answer:

13.94moles of Na₂O

Explanation:

The balanced reaction expression is given as:

        4Na  +  O₂  →   2Na₂O

Given parameters:

Number of moles of O₂ = 6.97moles

Unknown:

Number of moles of Na₂O

Solution:

 To solve this problem;

            1 mole of O₂  will produce 2 moles of Na₂O ;

            6.97 moles of O₂ will produce 6.97 x 2  = 13.94moles of Na₂O

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Which statement describes how the binary ionic compound KBr is named?
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Which statement describes how the binary ionic compound KBr is named? The metal is named first, and the name is unchanged. Which of these is a property of a substance that is composed of atoms that are held together by ionic bonds?

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Which statement correctly identifies the nuclide that is most likely to be unstable and describes why?
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C-14 is also a radioactive isotope with 8 neutrons and 6 protons.

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