A stock solution is a solution of a known concentration. Stock solution has a high concentration and therefore, the known amount of stock solution is used for preparing different concentrations, by diluting the same with the known amount of the solvent being used, such as water.
The answer to the problem is 4.5 kilometers. you can solve this problem by cross multiplying
Answer:
1. B
2. E
3. A
4. D
5. C
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GL :)
Answer:
The pH is approximately: 2.1549
Explanation:
pH = - log(0.007)
<h3>During physical changes, the composition od the original substance is not altered, but the properties of the original substance are altered. During a chemical change the composition od the original substance is not altered and the change is irreversible. Melting of butter and wax is an example of chemical changes.</h3>
