this way they can make sure that the experiment is correct.
Answer: The image from the question has the correct answers.
Explanation:
As summarized in the attached table.
Answer:
Lithium, Potassium and Calcium
Explanation:
Because they are all in group one of the periodic table
A. Industrial pollution, the rest are considered positive
If you mean hydrate as in <em>MgSO4 · 7H2O, </em>then simply find the molar mass of each element you see.
For the example above, that means you would add the molar mass (found on the periodic table) of Mg, then S, then 4(O), 14(H), and 7(O).
The results would be your molar mass for the hydrate.
I hope this is what you meant by your question!
