What is the pOH of a 4.8x10^-10M H+ solution

Answer:

This is a type of spinning movement which also is called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution.

Explanation:

Answer:

It is a type of spinning movement.

Explanation:

The change in the arrangement of particles as heat energy and temperature increase because of the increase in the kinetic energy of the particles.

How kinetic energy calculated?

Kinetic energy of any atom is calculated as:

K.E. = 1/2(mv²), where

v = velocity and m = mass

So, when we apply heat energy or increase the temperature of any system then the energy of the constitute particles is also increases which results in the increase of the average kinetic energy of the particle. Due to this kinetic energy particle will move with high velocity and disturbs the arrangement of the system.

Hence, due to increase in average kinetic energy, arrangement of the particles changes.

To know more about kinetic energy, visit the below link:

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Answer:

there is more energy added as heat rises

Explanation:

The person whose work led to a periodic table based on increasing atomic number was Henry Moseley.

Answer:

Metals

Explanation:

Change in colour as well as liberating gas are the evidences that chemical reaction or change taken place.

The change in colour of the solution provides us information or evidence is that chemical change has taken place. There are many other ways which provides evidence of taking place of chemical change is the release of gas from the solution after adding powder or any substance.

There are some reactions in which new substance is formed which is also an identification of chemical change so we can conclude that change in colour as well as liberating gas are the evidences that chemical reaction or change taken place.

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D.All of above. Hope it helps!!!

Answer:

Carbon, hydrogen, and oxygen only will be present in the substances that are created when ethanol burns.

Explanation:

Combustion means the process by which the burning of any substance, whether gaseous, liquid or solid, occurs.

Combustion reactions are reactions where oxygen intervenes as a reagent. Oxygen has the ability to combine with various elements to produce oxides, where then oxidation is the combination of oxygen with another substance. There are oxidations that are extremely slow, but when oxidation is rapid it is called combustion.

When a substance containing carbon and hydrogen (a hydrocarbon) undergoes complete combustion, or burning, oxygen is consumed and carbon dioxide is produced, and water.

Then the reaction  is:

C₂H₆O  +   O₂    ⇒      CO₂   +   H₂O

The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts .

The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

And by multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.  

So, considering the above, the balanced chemical equation is:

2  C₂H₆O  +   6 O₂    ⇒     6 CO₂   +   6 H₂O

In the previous combustion reaction you can see that:

• Elements in the reactants: C, H, O
• Elements in the products : C, H, O

You can see that in a chemical reaction the elements in the reagents must be the same elements present in the products.

So, carbon, hydrogen, and oxygen only will be present in the substances that are created when ethanol burns.