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Masja [62]
3 years ago
15

Why do we need an isolated system for the law of conservation of mass to be true?

Chemistry
2 answers:
emmasim [6.3K]3 years ago
8 0
The law of conservation of mass states 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.
Alex_Xolod [135]3 years ago
7 0

Answer:

The law of conservation of mass states 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.

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Tell your teacher. They'll know what to do and it's best to report it to them.
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3 years ago
How many atoms are there in 1.00g of na
Harlamova29_29 [7]

Answer: 2.62 x 10^22 atoms

Explanation:Please see attachment for explanation

5 0
2 years ago
See the reference image for the chemical equation for the reaction you just observed. What do you think each side of the equatio
kvasek [131]

Answer:

Detail is given below.

Explanation:

Chemical equation:

4NH₃ + 3O₂      →     2N₂ + 6H₂O

This reaction shows that when ammonia react with oxygen it form water and nitrogen gas.

There are two reactants on left hand side oxygen and ammonia. Ammonia is formed when nitrogen and hydrogen react. While on right hand side there are two products nitrogen and water. Water is formed by the reaction of hydrogen and oxygen.

The given reaction also shows that it follow the 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.

7 0
3 years ago
The equation shown represents cellular respiration.
nignag [31]

Answer: The correct answer is X represents water and Z represents oxygen.

Explanation:

Cellular respiration is defined as the breaking of sugar into a form that a cell can use as energy. This breaking of glucose takes place in the presence of oxygen gas.

Equation for the cellular respiration is given by the chemical reaction:

C_6H_{12}O_6+6O_2\rightarrow 6CO_2+6H_2O+Energy

Here, C_6H_{12}O_6 = Glucose

For the given chemical equation in the question,

Glucose+Z\rightarrow X+Y+Energy

Z represents oxygen gas

X represents either carbon dioxide or water

Y represents either carbon dioxide or water

Hence, the correct answer is X represents water and Z represents oxygen.

6 0
3 years ago
Read 2 more answers
State boyl"s law and Charle's law​
zubka84 [21]

Answer:

hey mateee

Boyle's law :-  the pressure (p) of a given quantity of gas varies inversely with its volume (v) at constant temperature.

Boyle's law can also be formularized as P1V1 = P2V2

Charle's law :-  the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant.

Charle's law can also be formularized as V1/T1 = V2/T2  

6 0
3 years ago
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