Question

answer this 4&5&6 plzz answer this

Answer 1

Hey !!!!

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4 (a) Chemical Formula : Potassium Chloride : KCl 

Molecular Mass : K + Cl Mass Of K is 39u mass of Cl is 35.5 u That we have to memorize... Now, Adding both, Hence, Mass of KCl is 74.5 u

(b)Chemical Formula: Sodium Nitrate : NaNO3 

Molecular mass : By Doing same above method we get, 85u 

(c) Chemical Formula: Calcium Carbonate : CaCO3

Molecular mass : 100 u

(d) Chemical Formula: Aluminium Sulphate : Al2(SO4)3

Molecular Mass : 342 u

(e) Chemical Formula : Magnesium Nitrate : Mg(NO3)2

Molecular Mass : 148 u

(f) Ammonium Nitrate : NH4NO3

Molecular mass : 80 u

(g) Calcium Phosphate : Ca3(PO4)2

Molecular mass : 310 u

(h) Magnesium Sulphate : MgSO4

Molecular Mass : 120 u

(i) Sodium Acetate : NaCH3COO

Molecular mass : 82 u 

(j) Ammonium Sulphate : NH4SO4

Molecular mass : 132 u


Question 5 : 

(a) KMgCl.6H2O ; Mass : 277 u

(b) MgSO4 ; Mass : 120 u

(c) CuSO4 ; Mass : 160u

(d) FeSO4.7H2O ; Mass : 278 u

(e) CaSO4.2H2O ; Mass : 172 u

(f) CaSO4 : Mass : 136 u

(g) ZnSO4 ; Mass : 161 u

(h) Na2S2O3 ; Mass : 158 u 

(i) H20Na2O14S ; Mass : 322 u

(j) KAl(SO4)2·12H2O ; Mass : 474 u


Question 6 :

(a) HNO3 -

(b) H2SO4 +

(c) HClO4 -

(d) HClO -

(e) HBrO3 +

(f) Mg(NO3)2 +2

(g) Al2(SO4)3 +3

(h)  Ca3(PO4)2 +2

(i) Mg3N2 +

(j) K2CO3 Neutral...

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Hope This Helps.....!!!