Inorganic Chemistry Answers

why do we use saturated sodium chloride to precipitate a polymer like for example PVA?

Thank you

what is sulphun?

A sample of pure sodium has a mass of 47.0g. How many moles of sodium does this sample contain

0.0859g of compound X which contains a group II metal dissolves in water to produce colourless solution. Excess acidified silver nitrate was the added and 0.308g of a white precipitate (Y) was formed.
A) identify y
B) write an ionic equation for the formation of y
C) use the data provided to identify the group 2 metal present in compound X

0.965g of aluminium nitrate is dissolved in 125 mL of water. What is the molarity of the cation and anion in the resulting solution?

1) Help me naming this complex compounds. Thank You in advance.
[CoCl2(NH3)4]NO2
[Cu(NH3)4]2+[PtCl4]2-
[CoCl(NH3)4(NO2)]Cl
[Co(N3)(NH3)5]SO4
2) What are ambidentate ligands? Give Examples.

a)One reaction that produces hydrogen gas can
be represented by the unbalanced chemical
equation Mg(s) + HCl(aq) −→ MgCl2(aq) + H2(g)
What mass of HCl is consumed by the reaction of 1.69 mol
of magnesium? Answer in units of g

b)What mass of MgCl2 is produced? answer in units of g

c)what mass of H2 is produced? answer in units of g

I have a quiz on the trends of the periodic table and I became confused by the trend in reactivity. I think that in the s block, reactivity decreases from left to right and increases from top to bottom. Also, I think that in the p block, reactivity decreases from top to bottom and increases from left to right. First of all, is this correct? Also, what is the trend in the d block (transition metals)?

Why redox titration with sodium oxalate and potassium nitrate testing should not exceed 70 or 80 ° C heat and sulfuric acid to a solution of sodium oxalate?

starting with solid silver nitrate,describe how you would prepere exactly 100 cm^3 of silver nitrate solution of concentration 0,01 mol dm^3