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Ray Of Light [21]
3 years ago
9

Please help me with these two

Chemistry
1 answer:
Anna [14]3 years ago
3 0
They exist in the outer orbitals
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UkoKoshka [18]

Answer:

1. a

Explanation:

2. c

7 0
3 years ago
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Cc
zzz [600]

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You should be posting this question under the biology tab, but here's the answer nonetheless.

a. 25% (if the woman is Ce)

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What is the charge on an atom after it gains two electrons during the formation of a bond?
vekshin1

Answer:

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8 0
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A chemist measures the amount of hydrogen gas produced during an experiment. She finds that 264. g of hydrogen gas is produced.
Lesechka [4]

Answer:

The answer is 130.953 g of hydrogen gas.

Explanation:

Hydrogen gas is formed by two atoms of hydrogen (H), so its molecular formula is H₂. We can calculate is molecular weight as the product of the molar mass of H (1.008 g/mol):

Molecular weight H₂= molar mass of H x 2= 1.008 g/mol x 2= 2.01568 g

Finally, we obtain the number of mol of H₂ there is in the produced gas mass (264 g) by using the molecular weight as follows:

mass= 264 g x 1 mol H₂/2.01568 g= 130.9731703 g

The final mass rounded to 3 significant digits is 130.973 g

4 0
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What are the rules for naming covalent compounds
arsen [322]
<span>1.Remove the ending of the second element, and add "ide" just like in ionic compounds
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3.If there is only one of the first element, you can drop the prefix
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