Oxidation states of elements

Question

Assignment:

Question 1. Identify oxidation states of all elements.

3Ag(s) + 4HNO₃(aq)->3AgNO₃(aq)+NO(g)+2H₂O(l)

Question 2.

a) A 6.35L sample of gas is collected at 55degreeC and 0.892 atm. What volume of the occupy at 1.05 atm and 20.0degree C.

PV=nRT
(.892)(6.35)=n(o.o821)(55+273)

b) If this gas weighs 4.237g, what monoatomic gas is it?

Question 3. Write the molecular and net ionic reactions for the following combinations of reactants. If a precipate does not form, write the molecular equation with the proper phases, followed by "no reaction" for the net ionic equation.

A. Beryllium sulfate and rubidium chloride.

Molecular equation:

BeSO₄(aq) +2RbCl(aq) -> BeCl₂(s) + Rb₂SO₄(aq)

B. Cobalt(II) nitrate and lithium sulfide

Do molecular equation showing all states and charges

Do the net ionic equation showing all states and charges and balance it.

Provide complete and step by step solution for the question and show calculations and use formulas.