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MA_775_DIABLO [31]
3 years ago
9

Covalent bonds are formed when valence electrons are

Chemistry
2 answers:
ratelena [41]3 years ago
8 0
I’m pretty sure it would be b
mamaluj [8]3 years ago
5 0
It’s b. Shared between two atoms.
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If you start with 0.020 g of Mg, how many moles of H2 will you make if the reaction is complete?
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If one starts with 0.020 g of Mg, 0.0008 moles of H2 would be made if the reaction is complete.

Going by the balanced equation of reaction in the image, 1 mole of Mg will produce 1 mole of H2 in a complete reaction.

If 0.020 g of Mg is started with:

mole of Mg = mass/molar mass

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More on stoichiometry can be found here: brainly.com/question/9743981

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