Question

Caluculate molecular mass of NaoH (Na.. 23 ,0.18 ,H-1) ​

Answer 1

Answer:

90

Explanation:

mole ratio h+ : OH = 12

Conc. of NaOH = 8/40 = 0.2m

Moles of sodium reacted = 0.02 x20 = 0.004 = 0.002moles

1000

Moles of acid reacted = 1/2 x 0.004 = 0.002 moles

                 0.002 moles => 0.18

1 mole = 1x 0.18 = 90

               0.002

Answer 2

Answer:

90

Explanation:

mole ratio h+ : OH = 12

Conc. of NaOH = 8/40 = 0.2m

Moles of sodium reacted = 0.02 x20 = 0.004 = 0.002moles

1000

Moles of acid reacted = 1/2 x 0.004 = 0.002 moles

                0.002 moles => 0.18

1 mole = 1x 0.18 = 90

              0.002

Explanation:

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