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Phantasy [73]
3 years ago
11

Which one is an example of a chemical change please help

Chemistry
1 answer:
ivanzaharov [21]3 years ago
3 0
Answer is A, an iron nail rusting. Rusting is know as a chemical change. Iron and oxygen atoms react with each other to create a chemical reaction. This creates an new substance called iron oxide.
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The pOH of a solution is 10.75. What is the concentration of OH??? ions in the solution?
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Answer: [OH^-] =10^{-10.75}=1.778\times 10^{-11}M

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