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Varvara68 [4.7K]
3 years ago
15

NO LINKS RIGHT ANSWERS ONLY!!!!

Chemistry
2 answers:
Ugo [173]3 years ago
7 0
Im pretty sure the answer is D
Mumz [18]3 years ago
6 0
I think the answer is D
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In the reaction aA + bB >> dD, the lowercase letters represent?
jolli1 [7]

Answer:

Coefficient

Explanation:

Chemical equation:

aA + bB    →   dD

This equation shows that reaction is balanced by coefficient q,b and d.

Reactant    coefficients              Product      Coefficient

A                    a                               D                     d

 B                    b                  

Every balanced equation follow the law of conservation of mass.

Law of conservation of mass:

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

Explanation:

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.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass. The numbers 6 with CO₂, 6 with H₂O and 6 with O₂  are coefficient which balance the equation.

8 0
2 years ago
Two children are waiting to go down a slide the first child goes down and then stays sitting at the bottom of the slide if there
Anon25 [30]

its b got it right on quiz

5 0
2 years ago
Describe how Fire Making undergo heat to light energy transformation.
Pavel [41]

As the combustible materials burn, some of the chemical energy is transformed into heat energy, and some are transformed into light energy. Light energy, also known as radiation or electromagnetic energy, is a type of kinetic energy that takes the form of visible light waves, such as the light from a match.

4 0
2 years ago
Calculate the amount of heat released when 27.0 g H2O is cooled from a liquid at 314 K to a solid at 263 K. The melting point of
lubasha [3.4K]
Cool liquid from 314 K to 273 K, freeze liquid at 273 K, and cool solid to 263 K.
5 0
3 years ago
Read 2 more answers
An isotope contains 26 protons, 24 electrons, and 32 neutrons
Anestetic [448]
The correct option is 58 Fe 2+.
A neutral atom normally has the same number of proton, neutron and electrons, if the number of electrons differ from that of proton, that means that the elements has given some electrons away or it has gained some electrons from another element.
In the question given above, the atomic number of the element is 26 [because the proton number is 26], which means the element is iron. Iron has 24 electrons because it has given two away, so it will have +2. The iron has 32 neutrons instead of 26 so it is an isotope.
3 0
3 years ago
Read 2 more answers
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