Question

question 8 (1 point) listen how many moles are present in 50.2 g of mercury? a) 10.06 moles b) 2.50 × 10⁻¹ moles c) 11.9 moles d) 1.01 × 10⁴ moles e) 0.350 moles question 9 (1 point)

Explanation:

Step1: Recall molar mass of Hg

Molar mass of Hg = $200.59\ \text{g/mol}$

Step2: Apply mole formula

Moles = $\frac{\text{Mass}}{\text{Molar Mass}}$
$\text{Moles} = \frac{50.2\ \text{g}}{200.59\ \text{g/mol}}$

Step3: Calculate the value

$\text{Moles} \approx 0.250\ \text{mol} = 2.50 \times 10^{-1}\ \text{moles}$

Answer:

b) $2.50 \times 10^{-1}$ moles