For the acids, use the formula pH = -log[H+). (Because HCI has 1 H+ ion per formula unit, [H] equals the

molarity.) For water, use what you know about the pH of neutral solutions. For the bases, examine and

extend the pattern. DONE

0.1 M

0.001 M

HCI

HCI

0.00001 M

HCI

Distilled

Water

0.00001 M

0.001 M

NaOH

NaOH

0.1 M

NaOH



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- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

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