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BlackZzzverrR [31]
3 years ago
10

Explain how chemical reactions apply to law of conservation of matter

Chemistry
1 answer:
eimsori [14]3 years ago
3 0
The law of conservation of mass says that matter cannot be created or destroyed. This means that when a chemical reaction happens, you can never create new atoms or destroy the ones that are reacting, they simply rearrange themselves into new substances.

For purposes of looking at chemical equations, this means that the equation that describes the reaction has to be "balanced". In other words, there must be the same number and same kind of atoms on the reactant side of the equation as there are on the product side to ensure that no atoms are created or lost during the reaction.
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3 years ago
Mg+o2 balanced eaquation
Tanya [424]

Answer:

2Mg+O2=2MgO

balanced equation

hope it helps.

5 0
3 years ago
Read 2 more answers
In water, hydrogen bonds are best described as _____.
Elina [12.6K]

Answer: Option D) covalent bonds between water molecules

In water, hydrogen bonds are best described as covalent bonds between water molecules

Explanation:

The hydrogen bonds between water molecules are covalent bonds because they are formed when oxygen attract the lone electron in hydrogen, thus resulting in the formation of a partially negative charge on the oxygen atom and a partially positive charge on two hydrogen atoms

Thus, the sharing of electrons between oxygen and hydrogen atoms is responsible for the covalent bonds between water molecules

7 0
3 years ago
In his version of the periodic table, mendeleev based his arrangement of the elements on an element's _________. atomic number c
sammy [17]
ʜᴇʟʟᴏ ᴛʜᴇʀᴇ!

In his version of the periodic table, Mendeleev based his arrangement of the elements on an element's atomic mass.

нσρє тнιѕ нєℓρѕ уσυ!
gσσ∂ ℓυ¢к :)
нανє α gяєαт ∂αу  

- нαηηαн ❤
4 0
4 years ago
1 point
Elina [12.6K]

Answer:

84672 J

Explanation:

From the question given above, the following data were obtained:

Height (h) = 72 m

Combined mass (m) = 120 Kg

Acceleration due to gravity (g) = 9.8 m/s²

Energy (E) =?

We can obtain the energy by using the following formula:

E = mgh

Where

E => is the energy.

g => is the acceleration due to gravity

m => is the mass.

h => is the height.

E = 120 × 9.8 × 72

E = 84672 J

Thus, the energy is 84672 J

6 0
3 years ago
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