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vladimir2022 [97]
3 years ago
12

How many valence electrons are in an atom of phosphorus? (atomic number 15) (1 point)?

Chemistry
1 answer:
densk [106]3 years ago
5 0
There are 5 valence electrons in a atom of phosphorus.
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How many grams of sodium are in 0.820 moles of na2so4?
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5 0
3 years ago
Read 2 more answers
During a laboratory experiment, 9.68 g of iron reacted with excess sulfur to form 13.8 grams of iron II sulfide. Calculate the p
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Explanation:

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<em>Where the moles of Fe added in excess of S are the moles of FeS</em>

<em />

Now, percent yield is defined as 100 times the ratio between actual yield (13.8g of FeS) and theoretical yield (15.2g FeS):

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3 years ago
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Z=atomic number  (protons)
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Data:
A=24
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Therefore:
24=Z+13
Z=24-13=11

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3 years ago
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