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Svet_ta [14]
1 year ago
6

True or false The density of a subsidence is always the same

Chemistry
2 answers:
Ronch [10]1 year ago
4 0
The answer is true that it right and that’s what I said
Veseljchak [2.6K]1 year ago
3 0
It is true the density of a substance is always the same
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Why is vsepr theory important?
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In a polar covalent bond, the distribution of common electrons are
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3 years ago
Which of the following chemical equations proves that the law of conservation of mass is in effect?
bogdanovich [222]

Answer:

2KCl + F₂   →     2KF + Cl₂

Explanation:

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

2KCl + F₂   →     2KF + Cl₂

In this equation mass of reactant and product is equal. There are 2 potassium 2 chlorine and fluorine atoms on both side of equation it means mass remain conserved.

All other options are incorrect because mass is not conserved.

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H₂O ---> H₂ + O₂

In this equation there is less oxygen on reactant side while more oxygen on product side.

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