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Natasha_Volkova [10]
4 years ago
8

Which of the following is true for all chemical reactions

Chemistry
1 answer:
motikmotik4 years ago
6 0
Conservation of mass. The mass that reacts must equal the mass of the products.
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en un recipiente se tiene 800 g de una solución al 35% en masa de ácido sulfuroso, de la cual se evapora 80ml de agua. ¿cuál es
Alinara [238K]

The mass percent of sulfurous acid in the new solution : 38.9%

<h3>Further explanation</h3>

<em>In a container you have 800 g of a 35% by mass solution of sulfurous acid, from which 80 ml of water evaporates. What is the mass percent of sulfurous acid in the new solution? data: density of water is 1g / ml.</em>

<em />

solution 1

composition :

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\tt 0.35\times 800~g=280~g

  • water :

\tt 800-280=520~g

solution 2(new solution)

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  • Total mass of new solution after water evaporated

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