Answer:
Hard water is water that has high mineral content, Soft water is free from dissolved salts of such metals as calcium, iron, or magnesium
Explanation:
Solve these problems like weighted averages:
The first one:
Multiply the masses (isotope numbers) by the decimal form of the percentage. Add them
0.076 (6) + 0.924 (7) = 6.924
The second one:
0.2 (10) + 0.8 (11) = 10.8
If you think about it, these answers make sense. 6.924 is much closer to 7 than to 6 (since there's a lot more lithium-7 than there is lithium-6). 10.8 is closer to 11 than to 10.
Answer:
Heat is not something that can be contained since it is not a tangible thing. Heat is a process
Explanation:
