The ___ is the number of protons in the nucleus of an atom of an element. Fill in the blank.
1 answer:
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KCO₂
K₂C₂O₄
Explanation:
Given parameters:
Percent composition:
K = 47%
C = 14.5%
O = 38.5%
Molar mass of compound = 166.22g/mol
Unknown:
Empirical formula of compound = ?
Molecular formula of compound = ?
Solution:
The empirical formula of a compound is its simplest formula. Here is how to solve for it:
K C O
Percent
composition 47 14.5 38.5
Molar mass 39 12 16
Number
of moles 47/39 14.5/12 38.5/16
moles 1.205 1.208 2.4
Dividing
by smallest 1.205/1.205 1.208/1.205 2.4/1.205
1 1 2
Empirical formula KCO₂
Molecular formula
This is the actual combination of the atoms:
Molecular formula = ( empirical formula of KCO₂)ₙ
Molar mass of empirical formula = 39 + 12 + 2(16) = 83g/mol
n factor =
n factor = = 2
Molecular formula of compound = ( KCO₂)₂ = K₂C₂O₄
Learn more:
Empirical formula brainly.com/question/2790794
#learnwithBrainly
<span>What is the mass number of an atom with 7 protons, 8 neutrons, and 7 electrons?
</span>
A Nitrogen atom with 7 protons<span> and </span>8 neutrons<span> has a </span>mass number<span> of 15
</span><span>
That Should Be The Correct Answer :D
Hope I Helped
-Nullgaming650
</span>
</span>
A Nitrogen atom with 7 protons<span> and </span>8 neutrons<span> has a </span>mass number<span> of 15
</span><span>
That Should Be The Correct Answer :D
Hope I Helped
-Nullgaming650
</span>