How many moles of sodium chloride are in 28 grams of NaCl?

A.) .265 mole NaCl

B.) .856 mole NaCl

C.) .479 mole of NaCl

D.) 1.2 mole NaCl

Option C. 0.479 mole of NaCl

Explanation:

First, we need to find the molar mass of NaCl.

MM of NaCl = 23 + 35.5 = 58.5g/mol

Mass of NaCl = 28g

Number of mole =?

Number of mole = Mass /Molar Mass

Number of mole = 28/58.5

Number of mole = 0.479mol

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).

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