A flask contains $0\mathrm{.}270$mol of liquid bromine, $B{r}_2.$ Determine the number of bromine molecules present in the flask.

Express your answer numerically in

Part C

The fuel used in many disposable lighters is liquid butane, $C_4{H}_{10}.$ How many carbon atoms $(C)$ are in $2\mathrm{.}50g$ of butane?

Express your answer numerically in atoms.

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carbon atomsmolecules.

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molecules