Answer: option C, a mixture
Explanation:
Crude oil is a mixture of hydrocarbons and different organic materials. It is refined into useful materials like petrol,diesel and various petrochemicals.
We can achieve equilibrium state, when the concentration of product and reactants are equal to each other.
<h3>Describe this system when it reaches phase equilibrium?</h3>
In this type of system, when the same amount of liquid water is converted into gaseous form of water and the gaseous form of water into liquid form of water. This phase is known as equilibrium phase or state because same amount of reactants and products are produced .
So we can conclude that we can achieve equilibrium state, when the concentration of product and reactants are equal to each other.
Learn more about equilibrium here: brainly.com/question/517289
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Answer:
Coal is mined from the earth and then burned for energy
Explanation:
Answer: Beryllium
Explanation: Beryllium has atomic number 4, which means it has 4 protons in its nucleus, and 4 electrons in its orbitals. The only stable isotope of Beryllium has 5 neutrons.