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3 years ago

Find the molecular mass of.

Chemistry

2 answers:

dem82 [27]3 years ago

7 0

Answer:

Explanation:

MOLECULAR MASS = ∑ the elements atomic mass from the periodic table

1st NaO

molecular mass = atomic mass of Na + Atomic mass of O

= ( 23 + 16 ) = 39 g/mol

2nd : AlCl3

M.m = atomic mass of Al + Atomic mass of 3Cl

( 27 + 3x35.5 )= 97 g/mole

3rd : Na3(SO4)

M.mass = atomic mass of 3 Na + atomic mass of S + atomic mass of 4 O

( 3x23) + 32 + (4 x 16) =165 g/mol

4th : Mg(OH)2

M.mass = atomic mass of Mg + atomic mass of 2 O + atomic mass of 2

= 24 + 2x16 + 2x1 = 58 g/mol

Margaret [11]3 years ago

3 0

Answer:

sodium oxide Nao
aluminum chloride Al2cl3
sodium sulphate Naso4
magnesium hydroxide Mgoh2

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