How many moles in 31.32 mL of liquid mercury (Hg)? Answer to 3 decimal places.
Question
How many moles in 31.32 mL of liquid mercury (Hg)? Answer to 3 decimal places.
Solution
To answer this question, we need to know the density of mercury and the molar mass of mercury.
- The density of mercury is 13.534 g/mL.
- The molar mass of mercury (Hg) is 200.59 g/mol.
Step 1: Convert the volume of mercury to mass using its density. Mass = Volume x Density Mass = 31.32 mL x 13.534 g/mL = 423.8 g
Step 2: Convert the mass of mercury to moles using its molar mass. Moles = Mass / Molar mass Moles = 423.8 g / 200.59 g/mol = 2.112 mol
So, there are 2.112 moles in 31.32 mL of liquid mercury. Rounded to three decimal places, this is 2.112 moles.
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