Given a piece of metal with a mass of 112 grams and volume of 24 cubic centimeters (cm 3 ), what is its density? use the correct formula to obtain your answer. you may work on a separate piece of paper.

Answer : The density of metal is, (3)

Explanation :

Density : It is defined as the mass contained per unit volume.

Formula used :

Given :

Mass of metal = 112 g

Volume of metal =

Now put all the given values in the above formula, we get :

Therefore, the density of metal is

- 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