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jasenka [17]
3 years ago
14

A 125 mL aqueous solution contains 1.86 mc032-1.jpg 10–5 g of potassium chloride and has a density of 1.02 g/mL. What is the con

centration in ppm?
Chemistry
1 answer:
Elan Coil [88]3 years ago
7 0
Mass of the <span>solvent (H2O) in kg

D = m / V

1.02 = m / 125

m = 1.02 x 125

m = 127.5 g of H2O

127.5 / 1000 => 0.1275 kg

mass of  solute in mg:

1000 x  ( 1.86 x 10</span>⁻⁵ ) = 0.0186 mg
<span>
ppm = mass of solute in mg / mass of solvent in kg

ppm = 0.0186 / </span><span>0.1275
</span><span>
= 0.1458 ppm

hope this helps!



</span>
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4 years ago
Dichlorine monoxide, Cl2O is sometimes used as a powerful chlorinating agent in research. It can be produced by passing chlorine
Amiraneli [1.4K]

Answer:

% yield =  82.5%

Explanation:

HgO + 2Cl₂ →  HgCl₂ +  Cl₂O

Our reactants are:

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Our products are:

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We do not have information about moles of reactants, but we do know the theoretical yield and the grams of product, in this case Cl₂O, we have produced.

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