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Alisiya [41]
3 years ago
5

A liquid is found to have a volume of 50 mL (in a graduated cylinder). When placed on a balance, the liquid and graduated cylind

er has a mass of 125 g. The empty graduated cylinder has a mass of 75 g. What is the density of the liquid?
Chemistry
2 answers:
DanielleElmas [232]3 years ago
7 0
Heyyyyyyyyyyyyyyyyyyyyyy
aliina [53]3 years ago
5 0

Answer:

1 g/ml^3

Explanation:

Volume= 50 mL

mass= 125 initial mass-75 graduated cylinder= 50 g

d= m/v , 50g/50mL

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The Balanced Chemical Equation is as follow;

                         4 KO₂  +  2 CO₂    →    2 K₂CO₃  +  3 O₂

First find out the Limiting Reagent,
According to equation,

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So,
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Solving for X,
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According to eq.

         284 g (4 moles) KO₂ formed  =  138.2 g of K₂CO₃
So,
         27.9 g of KO₂ will form  =  X g of K₂CO₃

Solving for X,
                        X  =  (138.2 g × 27.9 g) ÷ 284 g

                        X  =  13.57 g of K₂CO₃

So, 13.57 g of K₂CO₃ formed is the theoretical yield.

%age Yield  =  13.57 / 21.8 × 100

%age Yield  =  62.24 %
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