To perform this test to check if gold is real, make a light, tiny scratch on the item using a small nail file. Choose a spot that is not noticeable if possible. Use a dropper to apply a small drop of nitric acid to the scratch. If there is no reaction, then the piece is probably made from real gold.
Answer:
In solids, precipitation occurs if the concentration of one solid is above the solubility limit in the host solid, due to rapid quenching or ion implantation, and the temperature is high enough that diffusion can lead to segregation into precipitates.
Explanation:
Answer:
its about %5 more than it usualy is with is 1%
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do the math if you dont belives me br
Answer: I think it's either C or B? but I could be wrong.
Explanation:
Something that could help: The function of an organ system depends on the integrated activity of its organs.
Example of habitat degredation
