CaO
Calcium reacts with oxygen to form calcium oxide. The chemical equation for this reaction is Ca + O2 → CaO.
The Earth rotates 365 times during each complete revolution.
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Answer:
The first claim is false. Natural resources can most definitely exist without synthetic products.
Explanation:
All synthetic products are derived from natural resources as everything has to come from a source in the beginning. However, most natural resources themselves are the source, make sense? For example, water is a naturally occurring resource, but even water is derived from specific components, however it doesn't need anything synthetic to exist. Now take hairspray, to make hairspray you need water and synthetic resources, see where I'm going with that?
Answer:
Water's pH level is usually 6.5-8.5, any lower and it becomes acidic. Strong acid usually has a pH level of 0-1.
Explanation:
Yes it is true. Of course it is right.