(6 Points) need help quick 7 A group of students investigated the reaction of magnesium metal with different acids,
First, they added a piece of magnesium to a dilute solution of hydrochloric acid (a strong acid) and
noted how long it took for 100 cm3 of hydrogen gas to be produced.
Then they repeated the experiment using a concentrated solution of ethanoic acid (a weak acid).
The amount of metal and the volume of acid was the same in both reactions.
The students found that the reactions took the same amount of time to produce 100 cm of gas,
Explain how the reaction times could be the same for the different acids

- 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