Answer:
What do <u>YOU</u> think?
Explanation:
This question is asking for an opinion. The word should is included.
Answer:
3 is the coefficient of oxygen.
Explanation:
Chemical equation:
CH₃OH + O₂ → CO₂ + H₂O
Balanced chemical equation:
2CH₃OH + 3O₂ → 2CO₂ + 4H₂O
The given reaction is combustion reaction. In this reaction methanol is burn in the presence of oxygen and produces carbon dioxide and water.
The balance equation show reaction also follow the law of conservation of mass.
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.
Majority of the atoms mass is found in the nucleus, which consists of protons and neutrons. Neutrons have a neutral charge, while protons have a positive charge.
The number of atoms of oxygen is 2.4 * 10^24.
<h3>How many atoms are produced?</h3>
We know that mole of a substance contains the Avogadro's number of atoms. The Avogadro's number gives the number of atoms, molecules, ions and atoms that could be found in one mole of a substance.
Now;
Given that ;
1 mole of oxygen contains two atoms of oxygen, the number of atoms that are contained in 2 moles of the oxygen molecule is;
2 * 2 * 6.023 * 10^23
= 2.4 * 10^24
Learn more about dimensional analysis:brainly.com/question/13078117
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Answer:
The answer to your question is d.
Explanation:
Chemical changes happen when the substance changes its original properties to form a new one. So option 1 is incorrect.
Dissolving a new substance does not form new substances as I mentioned before. The second option is incorrect.
The third option is also wrong because dissolving a substance does not separate anything.
The fourth option is correct, dissolving a substance allows us to make solutions.
