Question

Which of the following is the best example of law of conservation of mass

Answer 1

the law of conservation of mass states that in a closed system, the mass of the system cannot change over time. Look at our example of the candle in the closed room. ... If you massed the reactants oxygen and wax, it would equal the mass of the products water and carbon dioxide

Answer 2

The law of conservation of massstates that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants

EXAMPLES ARE AS FOLLOWS:

#1

When you burn charcoal, there are products that are formed due to this burning, which are soot, ashes, heat, and various types of gases. Now these products of combustion are directly proportional to the raw material or the charcoal which was burned, in such a way that the charcoal turns into all the products, keeping the mass constant. However, there is a slight production of energy, when mass is transformed, in this case, being heat energy. But these changes are very minute and can't be detected easily, thus not considered

#2

In this example, we will discuss a very basic chemical reaction between 1 molecule of Hydrogen with 1½ molecule of Oxygen. When these two molecules react under heat, they give one molecule of water (H2O). The molecular weight of Hydrogen is 2 and that of Oxygen is 8, which when mixed produces 10 units, which is the molecular weight of the water molecule. Therefore, in chemistry, the mass of the substrates are kept constant in the products.

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