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The mass of chemical A is 2 g, and the mass of chemical B is 5 g. If the two chemicals are mixed and a
chemical reaction takes place, what is the mass of the end products?

Respuesta :

znk

Answer:

[tex]\large \boxed{\text{7 g}}[/tex]

Explanation:

The Law of Conservation of Mass states that matter cannot be destroyed or created.

That is, the total mass before and after the reaction stays the same.

                  A + B ⟶ C

mass/g:      2    7        x

[tex]\begin{array}{rcl}\text{Mass of A + Mass of B} & = & \text{Mass of C} \\\text{5 g + 2 g} & = & x\\x& = & \textbf{7 g}\\\end{array}\\\text{The mass of C is $\large \boxed{\textbf{7 g}}$}[/tex]

dsdrajlin

2 g of A react with 5 g of B. After the chemical reaction takes place, the mass of the end products is 7 g.

Let's consider the following generic reaction.

A + B ⇒ Products

According to Lavoisier's law of conservation of mass, matter is not created nor destroyed over the course of a chemical reaction.

Thus, the mass of the reactants before the reaction must be equal to the mass of the products after the reaction.

[tex]mA + mB = mProducts\\\\2 g + 5g = mProducts = 7g[/tex]

2 g of A react with 5 g of B. After the chemical reaction takes place, the mass of the end products is 7 g.

Learn more: https://brainly.com/question/13497208

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