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Aleks [24]
3 years ago
9

Which is the most abundant isotope of carbon??

Chemistry
1 answer:
Gwar [14]3 years ago
3 0
Carbon-12, my friend
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How many moles of gold are equivalent to 1.204 × 1024 atoms? 0.2 0.5 2 5
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Answer:

c

Explanation:

How many moles of gold are equivalent to 1.204 × 1024 atoms?

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0.5

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C) 2 Is the correct answer, I took the test and it was correct.

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Write a balanced equation for the complete combustion of 2,3-dimethylbutane. use the molecular formula for the alkane (c before
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<em>Step 1</em>. Write the <em>condensed structural  formula</em> for 2,3-dimethylbutane.

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<em>Step 2</em>. Write the <em>molecular formula</em>.

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<em>Step 3</em>. Write the <em>unbalanced chemical equation</em>.

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<em>Step 4</em>. Pick the <em>most complicated-looking formula</em> (C_6H_14) and balance its atoms (C and H).

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<em>Step 5</em>. Balance the <em>remaining atoms</em> (O).

1C_6H_14 + (<em>19/2</em>)O_2 → 6CO_2 + 7H_2O

Oops! <em>Fractional coefficients</em>!

<em>Step 6</em>. <em>Multiply all coefficients by a number</em> (2) to give integer coeficients..

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