What is the volume of an object with a density of 7.73 g/cm^3, and a mass of 5.40 x 10^2 g?

Volume of the object is,

Explanation:

It is given that,

Mass of the object,

Density of the object,

Let V is the volume of the object. We know that the mass divided by  volume of any material is called its density. The mathematical relation is given by :

So, the volume of the object is . Hence, this is the required solution.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.