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3 years ago

How many carbon atoms are there in 200 molecules of C3H2O?

Chemistry

1 answer:

sp2606 [1]3 years ago

5 0

Answer:

$\boxed {\boxed {\sf 600 \ atoms \ of \ carbon}}$

Explanation:

We are given this compound with the formula: C₃H₂O

According the subscripts, 1 molecule contains 3 carbon atoms, 2 hydrogen atoms, and 1 oxygen atom.

We can make a ratio. There are 3 carbon atoms for every 1 molecule of C₃H₂O.

$\frac { 3 \ atoms \ C }{1 \ molecule C_3H_2O}$

Since we want to calculate the number of atoms in 200 molecules, we can multiply the ratio by 200.

$200 \ molecules \ C_3H_2O*\frac { 3 \ atoms \ C }{1 \ molecule C_3H_2O}$

$200*\frac { 3 \ atoms \ C }{1 }$

$600 \ atoms \ C$

200 molecules of C₃H₂O contains 600 atoms of carbon.

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NaOH is a strong base and dissociates completely as follows.

$NaOH (aq) \rightarrow Na^{+} (aq) + OH^{-} (aq)$

The mole ratio of NaOH and OH⁻ is 1:1 . Therefore the concentration of OH⁻ is same as that of NaOH.

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