Question

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

O 1.20 x 1026
0 3.61 x 1026
200
600

Answer 1

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

Step-by-step 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.