Questions: How many molecules are in 0.8 moles of NO2 ? [?] × 10^[?] molecules of NO2 Remember: 1 mole = 6.02 × 10^23 molecules

Transcript text: How many molecules are in 0.8 moles of $\mathrm{NO}_{2}$ ? \[ [?] \times 10^{[?]} \text { molecules of } \mathrm{NO}_{2} \] Remember: 1 mole $=6.02 \times 10^{23}$ molecules

Solution

Solution Steps

Step 1: Identify the Given Information

We are given 0.8 moles of $\mathrm{NO}_{2}$.
1 mole of any substance contains $6.02 \times 10^{23}$ molecules.

Step 2: Set Up the Calculation

To find the number of molecules in 0.8 moles, multiply the number of moles by Avogadro's number: \[ \text{Number of molecules} = 0.8 \, \text{moles} \times 6.02 \times 10^{23} \, \text{molecules/mole} \]

Step 3: Perform the Multiplication

Calculate the product: \[ 0.8 \times 6.02 = 4.816 \]
Therefore, the number of molecules is: \[ 4.816 \times 10^{23} \, \text{molecules of } \mathrm{NO}_{2} \]

Step 4: Identify the Coefficient and Exponent