Directions:Arrange the following solutions in increasing concentration by using the numbers I to 5 (5 being the concentrated solution and I being the diluted solution).
_10ml, vinegar mixed with 100ml water
_1mL vinegar mixed with 100ml water
_25ml vinegar mixed with 100ml water
_34ml, vinegar mixed with 100mL water
_0.2mL vincear mixed with 100mL water

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i can ! i just need to know what the paragraph is! : p

- 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