It is because both of them belong to the same group and have only 2 electrons in their valence shell.Therefore, they tend to loose them in order to attain stable electronic configuration.Doing this they form +2 charged ions.
the charge of zinc has only one charge which is 2+.
Zn(NO3)2 + 2Ag ---> Zn + 2AgNO3
yes Zn + 2HCl -> ZnCl2 + H2 is balanced
Your question is not clear: the mass of products is equal to the mass reactants.
The oxidation number of zinc (Zn) in Zn(NO3)2 is +2, while in Zn(OH)4^2-, it is also +2. Therefore, there is no change in the oxidation number of zinc.
Zn will most likely get a 2+ (positive) charge!
+2 is the charge of zinc
Zinc is Zn; bicarbonate, also known as hydrogen carbonate, is HCO3; after taking into account the +2 charge of the Zn and the -1 charge of HCO3 we get: Zn(HCO3)2.
the charge of zinc has only one charge which is 2+.
+2 "God Speed and Party on" - Bas Rutten
Zn(NO3)2 + 2Ag ---> Zn + 2AgNO3
ZnO+ KOH→K2O+Zn(OH)2
yes Zn + 2HCl -> ZnCl2 + H2 is balanced
Equation is Zn + Pb(NO3)2 --> Zn(NO3)2 + Pb
Your question is not clear: the mass of products is equal to the mass reactants.
The oxidation number of zinc (Zn) in Zn(NO3)2 is +2, while in Zn(OH)4^2-, it is also +2. Therefore, there is no change in the oxidation number of zinc.
Oxidation number is +2 for Zn+2 ion