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dsp73
3 years ago
13

Determine the number of atoms in 1.70 ml of mercury. (the density of mercury is 13.5 g/ml.)

Chemistry
1 answer:
marishachu [46]3 years ago
8 0

<span>To determine the number of atoms in 1.70ml of mercury, we have to determine the moles of mercury.</span>

<span>First find the mass in grams by using the formula:</span>

<span>Mass = volume x density</span>

<span>(1.70 mL Hg) x (13.5 g/mL) = 22.95 g Hg </span>

<span>Now find number of moles;</span>

<span>
(22.95 g Hg) x (1 mol Hg/200.59 g/mol) = 0.1144 mol Hg </span>

<span>For number of atoms multiply with Avogardro's number that is 6.023 x 10</span>²³

<span>
<span>(0.1144 mol Hg) x (6.023 x 10</span></span>²³ atoms/mol) = 6.89 x 10²² atoms Hg 

So, there is 6.89 x 10²² atoms of mercury are present in 1.70ml of mercury.

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