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Ivahew [28]
2 years ago
8

How many inner, outer, and valence electrons are present in an atom of each of the following elements?

Chemistry
1 answer:
telo118 [61]2 years ago
5 0

Answer:

(a) O =  Valance Electrons (6), Inner electrons (8)

(b) Sn =  Valance Electrons (2), Inner electrons (36)

(c) Ca =  Valance Electrons (2), Inner electrons (20)

(d) Fe =  Valance Electrons (2), Inner electrons (26)

(e) Se = Valance Electrons (6), Inner electrons (34)

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7 0
2 years ago
Read 2 more answers
Which of the following species has the greatest
Vikki [24]

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Cl-

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4 0
1 year ago
How many grams of methane gas (CH4) need to be combusted to produce 12.5 L water vapor at 301 K and 1.1 atm? Show all of the wor
tangare [24]
Answer is: 4.45 grams of methane gas <span>need to be combusted</span>.
Balanced chemical reaction: CH₄ + 2O₂ → CO₂ + 2H₂O.
Ideal gas law: p·V = n·R·T.<span>
p = 1.1 atm.
T = 301 K.
V(H</span>₂O) <span>= 12.5 L.
R = 0,08206 L·atm/mol·K.
</span>n(H₂O) = <span>1.1 atm · 12.5 L ÷ 0,08206 L·atm/mol·K · 301 K.
</span>n(H₂O) = 0.556 mol.
From chemical reaction: n(H₂O) : n(CH₄) = 2 : 1.
n(CH₄) = 0.556 mol ÷ 2 = 0.278 mol.
m(CH₄) = 0.278 mol · 16 g/mol.
m(CH₄) = 4.448 g.
4 0
3 years ago
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