D. The final substance in Beaker A is a mixture and in Beaker B is a pure substance.
Hydrogen is composed of H atom and oxygen is composed of O atom. For water, it is composed by both H and O atom. If you burn hydrogen in oxygen, you can get water. And if you electrolysis water, you can get hydrogen and oxygen.
A bag of soil will weigh in kilograms
Answer:
The formula for water is . The oxidation number of hydrogen is +1. Since there are two of them, the hydrogen atoms contribute to a charge of +2. The water molecule is neutral; therefore, the oxygen must have an oxidation number of to balance the charge.
Answer:
Explanation:
https://www.bbc.co.uk/bitesize/guides/zxgkp39/revision/3
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