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Sedaia [141]
3 years ago
14

According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of th

e reactants? A There is no relationship. B The mass of the products is sometimes greater. C The mass of the reactants is greater. D The masses are always equal.
Chemistry
1 answer:
grandymaker [24]3 years ago
6 0
The masses are always equal. Since matter can not be created nor destroyed, you will have the same amount of mass as you did before the reaction as you do after. 
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a 20.5g sample of cleaning detergent contains 8.61g of NH40H.CALCULATE the percentage composition of nitrogen in the cleaning de
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The mass percentage composition of nitrogen in the sample of the cleaning detergent is approximately 16.78%  

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The percentage composition of nitrogen in the sample of the cleaning detergent, %N is given as follows;

\% Composition = \dfrac{Mass \ of \ component}{Total \ mass \ of \ cleaning \ detergent} \times 100

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How many moles of koh are contained in 250 ml of a 2.0 m solution of koh
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