How many molecules are present in 3.0 moles of $$ \mathrm{CO}_{2} $$ ? A. $$ 6.02 imes 10^{23} $$ molecules B. $$ 1.81 imes 10^{24} $$ molecules C. $$ 9.03 imes 10^{23} $$ molecules D. $$ 3.61 imes 10^{24} $$ molecules

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How many molecules are present in 3.0 moles of $$ \mathrm{CO}_{2} $$ ? A. $$ 6.02 	imes 10^{23} $$ molecules B. $$ 1.81 	imes 10^{24} $$ molecules C. $$ 9.03 	imes 10^{23} $$ molecules D. $$ 3.61 	imes 10^{24} $$ molecules

UpStudy AI · Accepted Answer

To determine the number of molecules in 3.0 moles of carbon dioxide ($$\mathrm{CO}_2$$), you can use Avogadro's number, which is approximately $$6.02 \times 10^{23}$$ molecules per mole.

**Calculation:**
$$
\text{Number of molecules} = \text{Number of moles} \times \text{Avogadro's number}
$$
$$
\text{Number of molecules} = 3.0 \, \text{moles} \times 6.02 \times 10^{23} \, \text{molecules/mole} = 1.806 \times 10^{24} \, \text{molecules}
$$

Rounding to two significant figures, this gives approximately $$1.81 \times 10^{24}$$ molecules.

**Answer:**  
**B. $$1.81 \times 10^{24}$$ molecules**
There are $$1.81 \times 10^{24}$$ molecules in 3.0 moles of $$ \mathrm{CO}_{2} $$.

How many molecules are present in 3.0 moles of \( \mathrm{CO}_{2} \) ? A. \( 6.02 \times 10^{23} \) molecules B. \( 1.81 \times 10^{24} \) molecules C. \( 9.03 \times 10^{23} \) molecules D. \( 3.61 \times 10^{24} \) molecules

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