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joja [24]
2 years ago
11

The element oxygen has _____ valence electrons. (Input only a whole number, such as 7.)

Chemistry
2 answers:
kipiarov [429]2 years ago
8 0
Remark
The short Answer is 6. That's why the ion has a charge of minus 2. Oxygen is doing it's best to have its outer ring have 8 electrons which is the number of outer electrons contained in the outer ring of the Noble Gas Neon.

Answer 6.
Neko [114]2 years ago
8 0
Looking at the periodic table, oxygen is in group 6A, meaning it has 6 valence electrons. Another way to determine this is look for the noble gas in the same row as the element whom's valence electrons you wish to find and subtract 1 valence electron from 8 until you reach the desired element. This will be your amount of valence electrons :)
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laila [671]

Answer:

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6 0
3 years ago
For the reaction 2 HCl + Ca ( OH ) 2 ⟶ CaCl 2 + 2 H 2 O how many grams of calcium hydroxide, Ca(OH)2, are needed to react comple
kari74 [83]

Answer: 65.38g of Ca(OH)2 is needed

Explanation:

From The equation of reaction

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From The stoichiometric equation

2mol of HCl(36.5×2=73) require 1mol of Ca(OH)2 (74g)

Hence 64.5g of HCl will require 64.5×74/73= 65.38g of Ca(OH)2

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schepotkina [342]
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7 0
3 years ago
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Answer:

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Explanation:

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4 0
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