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KatRina [158]
3 years ago
8

How many electrons does a halogen need to comeplete an pctet?

Chemistry
1 answer:
TEA [102]3 years ago
7 0
Halogen have 7 valance electrons, for a halogen to be stable it need 8 valance electrons to be stable. So It needs 1 more valance electrons.
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Identify 3 items that are malleable
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What is the formula for frequency?
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2. What mass of sodium chloride is produced when chlorine gas reacts with 2.29 grams of sodium iodide? The unbalanced equation i
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Answer:

0.88g

Explanation:

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         2NaI  + Cl₂   →    2NaCl  + I₂

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Unknown:

Mass of NaCl = ?

Solution:

To solve this problem, we work from the known to the unknown.

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So;

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Therefore;

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8 0
2 years ago
If a pork roast must absorb
Black_prince [1.1K]
Let us  assume propane was the fuel
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1 mole ofpropane produces 3 moles of CO2 
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                                     = 243.87 kJ/mol
number of moles of propane = 1700kJ / 243.87 kJ/mol
                                              = 6.971 moles
1 mole of C3H8 = 3 moles ofCO2
6.971 moles of C3H8 = ?
3 x 6.971 = 20.913 moles of CO2
Convert to grams
mass = MW x mole
          = 44 x 20.913
          = 920.172g of CO2 emitted 
7 0
3 years ago
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