write the chemical formula of zinc chloride. calculate the molecular mass. also calculate the number of moles in 34g of zinc chloride. (given atomic mass of zn=65u , cl= 35.5u).
Answers
Answered by
24
Hi there !!
Symbol Zn Cl
Valency 2 1
Formula : ZnCl₂
Molecular mass of ZnCl₂ = Atomic mass of Zinc + 2 × Atomic mass of Chlorine
= 65 + 35.5×2
= 136 u
==============================================================
Given mass = 34 g
Molar mass = 136 u
No : of moles = Given mass ÷ Molar mass
= 34 ÷ 136
= 0.25 moles
Symbol Zn Cl
Valency 2 1
Formula : ZnCl₂
Molecular mass of ZnCl₂ = Atomic mass of Zinc + 2 × Atomic mass of Chlorine
= 65 + 35.5×2
= 136 u
==============================================================
Given mass = 34 g
Molar mass = 136 u
No : of moles = Given mass ÷ Molar mass
= 34 ÷ 136
= 0.25 moles
Anonymous:
superb answer!!! keep going
i have seen many answers of yours your way of expressing the answers are mind blowing!! keep it up!!
thx
Answered by
20
Chemical formula of Zinc Chloride:-
ZnCl2
Molecular mass of Zinc Chloride = Atomic mass of Zinc + Atomic mass of Chloride * 2
= 65 + 35.5 * 2
= 136 u
No. of moles in 34 g Zinc Chloride
Given mass = 34 g
Molecular mass of Zinc Chloride = 136 u
No. of moles = Given mass / Molecular mass
= 34 / 136
= 0.25 mole Ans.
ZnCl2
Molecular mass of Zinc Chloride = Atomic mass of Zinc + Atomic mass of Chloride * 2
= 65 + 35.5 * 2
= 136 u
No. of moles in 34 g Zinc Chloride
Given mass = 34 g
Molecular mass of Zinc Chloride = 136 u
No. of moles = Given mass / Molecular mass
= 34 / 136
= 0.25 mole Ans.
splendid explanation!! keep it up
Similar questions