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Nat2105 [25]
3 years ago
10

Which of the following molecules has a covalent bond? A) H-F B) H-Cl C) H-Br

Chemistry
2 answers:
damaskus [11]3 years ago
6 0
All of them are covalent bonds, all the elements are non metals and covalent bonds are formed between 2 non metals.
Gala2k [10]3 years ago
5 0
What is the options but i would say A but not sure
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Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chloride are needed to have 100.mg of Na present? G
seraphim [82]

<u>Answer:</u> The mass of sodium chloride solution present is 0.256 grams.

<u>Explanation:</u>

We are given:

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This means that 39.0 grams of sodium is present in 100 grams of sodium chloride solution

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Applying unitary method:

If 39 grams of sodium metal is present in 100 grams of sodium chloride solution

So, if 0.1 grams of sodium metal will be present in = \frac{100}{39}\times 0.1=0.256g of sodium chloride solution.

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2 years ago
chlorine has two naturally occurring isotopes, Cl-35 and Cl-37. The atomic mass of chlorine is 35.45. Which of these two isotope
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