Answer:
Physical change: A,C ,D, F, H, I
Chemical Change: B, E, G, J, K
The coefficient in a chemical formula represents the amount of each chemical present. The amount of a substance is measured in moles.
A vibrating string can create longitudinal waves as depicted in the animation below.
The answer is C) vibrations
Answer:
0.0400M of KI
Explanation:
Molarity is an unit of concentration defined as the ratio between moles of solute and liters of solution.
When you add 10.0 mL of 0.10M KI and 15.0mL, total volume is:
25.0mL = <em>0.025L of solution</em>
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And moles of KI are:
0.0100L × 0.10M = <em>0.00100 moles of KI</em>
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Thus, molarity is:
0.00100 moles / 0.025L = <em>0.0400M of KI</em>
