Question

how many mole of Ba are present in sample of Ba3 (PO4 )2 if a sample of Ba3 PO 4 whole twice contains 0.8 mole of P​

Answer 1

Answer:

hey there is answer !!

Dear Student,

17.volume of solution = 100 ml

specific gravity = 1.08

density = 1.08 g/mL

mass of solution = 100 × 1.08 = 108 g

Mass of HCl present = 108 × 20 / 100 = 21.6 g

No. of moles of HCl = 21.6 / 36.46 = 0.592 = 0.60

So,the correct option is (b).

11.X gm of A=X/2 gm of B (as atomic mass of A is 1/2 times of atomic mass of B)

Now,,X gm of A contains Y atoms

=>X/2 gm of A contains Y/2 atoms

Two times the gms of B i.e. 2×X/2 gms of B contains atoms=2×Y/2= Y atoms.

So,the correct option is (c).

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