When 6 grams of zinc are dropped into excess hydrochloric acid, how many grams of zinc chloride will be produced?

The mass of zinc chloride produced will be 12.402 grams.

Explanation:

To calculate the number of moles, we use the equation:

 .....(1)

Given mass of zinc = 6 g

Molar mass of zinc = 65.38 g/mol

Putting values in above equation, we get:

For the reaction of zinc and hydrochloric acid, the chemical equation follows:

Hydrochloric acid is given in excess, so it is considered as an excess reagent. Zinc is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

1 mole of zinc metal produces 1 mole of zinc chloride.

So, 0.091 moles of zinc metal will produce = of zinc chloride.

Now, calculating the mass of zinc chloride produced, we use equation 1.

Moles of zinc chloride = 0.091 moles

Molar mass of zinc chloride = 136.286 g/mol

Putting values in equation 1, we get:

Hence, the mass of zinc chloride produced will be 12.402 grams.

a chemical reaction happens

explanation:

- 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