What is the molecular equation to AgNO3 (aq) + H2S(aq)?

There are two forms of chemical equations

Ion equation: written in ion form (as separated ions) which forms the net ionic equation after removing an ion spectator

Molecular equation: written in molecular form

2AgNO₃(aq) + H₂S(aq) ⇒ Ag₂S(s) + 2HNO₃(aq)

The above reaction can be included in a double replacement reaction⇒ an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product

It can be shown the existence of the precipitation reaction, which is the formation of insoluble Ag₂S (not dissolve)

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

it's filtration, but this is an assumption so my apologies if i got this