Question

calculate the molecular weight or atomic weight of the following compounds or atoms.
a.Ammonia
b.Sodium chloride
c.Hydrochloric acid
d.Aluminum chloride
e.Ammonium hydroxide

Answer 1

Answer:

Explanation:

a. Ammonia

(NH) nitrogen +hydrogen

14gm +1gm =15gm (molecular weight

atomic weight is 15u or nitrogen atomic weight 14u and hydrogen atomic weight 1u

B. Sodium chloride (Nacl)

na atomic weight is 23u and cl atomic weight is 35.5u. So molecular weight is 23 +35.5=58.5g

C. hydrochloric acid (Hcl)

Weight of hydrogen is 1u and atomic weight of cl is 35.5u. So molecular weight is 35.5+1=36.5g

D. Aluminum chloride (Alcl3)

Al atomic weight is 27u and cl mass is 35.5*3=106.5u so molecular weight is 106.5+27=133.5g

E. ammonium hydroxide (Nh4oh) mass of N is 14u, mass of H is 1*4=4u and mass of o is 16u and mass of H is 1u so molecular weight is 14+4+16+1=35g

hope it helps you

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