Kinetic energy and mechanical energy I believe.
Answer: last option: Ar
Justification:
The metallic character of the elements in the periodic table increase from right to left and from top to bottom.
That means that the elements of groups (rows) 1 and 2 and periods (columns) 6 and 7 are the most metallics, and the elements of groups 17 and 18 and periods 1 and 2 are the least metallics.
Na, Mg, Al, P and Ar are in the same period (row) so you can differentiate their metallic character by the rule that the more to the right on the row the less metallic the element is.
Na (left end the row) is the most metallic and Ar (right end of the row) is the least metallic.
P and Ar are less metallic.
Then, the list arranged in order of decreasing metallic character is:
Na > Mg > Al > P > Ar.
Therefore, the answser is Ar.
<span>A student adds too much HCl during the titration, the calculated ksp be too high.
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Reason
Ksp refers to solubility product. It is a measure of solute present in solution. Now, when a sparingly solution base, like calcium hydroxide, is titrated with an acid, like HCl. The reaction results in generation of salt (in present case CaCl2) and water. The solubility of salt is higher as compared to sparingly soluble base. So during the course of reaction, Ca^2+ ions present in system will combine with Cl^- ions to form CaCl2. This will result in decreasing in conc. of Ca^2+ ions in solution. To compensate for this lose, more Ca^2+ ions from Ca(OH)2 will dissolve in solution. Thus, Ksp value will increase.
Answer:
Number of atoms of carbon in carbon dioxide
Explanation: