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Important discoveries from Lavoisier who changed the field of chemistry in the late 1700s
- 1. periodic system
- 2. the discovery of oxygen
- 3. the law of conservation of mass
- 4. the importance of weighing
There are several important discoveries from Antoine Laurent Lavoisier who changed the field of chemistry in the late 1700s
The findings include:
- 1. he discovered the naming of the chemical periodic system for the first time on which the naming of the modern periodic system was based
- 2. He put forward the term "oxygen" and stated that air consists of two components namely nitrogen and oxygen.
- And oxygen is what plays an important role in the combustion process of a substance
- 3. He stated the law of conservation of mass.
Experiments carried out by reacting oxygen and mercury in a closed system and produce mercury oxide
And if it is heated it will again produce the same amount of oxygen and mercury
From this experiment, he stated the law that:
In a closed system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.
- 4. Lavoisier's precision in the importance of the weighing process in chemical reactions causes an important basis in the calculation of chemistry for the progress of research in the future
Law of conservation of mass https://brainly.in/question/4830694
application of mass conservation law brainly.com/question/6677869
the law of conservation of matter
Keywords: mass, closed system, Lavoisier, combustion, periodic system
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Answer:
Au
Explanation:
For the density of a face-centered cubic:
where
= molar mass of the compound
avogadro's constant
the volume of a unit cell
Given that:
Density = 19.30 g/cm³
a = 0.408 nm
a =
a =
∴
Thus, the molar mass of 197.37 g/mol element is Gold (Au).