Explanation:
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The following that is not true about chemical changes is "<span>They can be reversed by physical changes.", the answer is letter B. A chemical change can form a new substance, can be detected by the change in color and they have properties different from their starting materials.</span>
The correct answer is C. Explanation: a mixture is the physical combination of two or more substances who’s identities are retained. Therefore, c is correct.
Answer:
The new volume of gas would be 30 L.
Explanation:
This is an example of a Combined Gas Laws problem.
Answer:
28
Explanation:
CnH2n+2 is the general molecular forma for a acyclic alkane