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What is the correct formula for a nickel(II) complex which contains 4 ammonia molecules and 2 water molecules?

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This solution provides the full written chemical formula for a nickel (II) complex.

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Chemistry language

Can you please assist me with these problems?

1.Write the correct formula for each of the following

manganese (II) iodine

2. Write the correct formula for each of the following ions


3. Name the following compounds:
a) BaHPO3

b) AgIO

4. Balance the following equations:
i)PbCl2+AgNO3 → AgCl+Pb(NO3)2

ii) AlCl3+NH4OH → Al(OH)3+NH4Cl

iii) FeCl3+CA(OH)2 → CaCl2+Fe(OH)3

iv) Pb(ClO3)2+K2SO4 → PbSO4+KClO3

v) Na+HOH → NaOH+H2

vi) Zn+HCl → ZnCl2+H2

vii) Al+AgCH3COO → Al(CH3COO)3+Ag

viii) MgO+HNO3 → Mg(NO3)2+H2O

ix) MnO2 → Mn3O4+O2

5. Why is it incorrect to alter the chemical formula when balancing a chemical equation?

6. Write and balance equations for the following reactions:
a) zinc sulphate + barium nitrate →

b) gold (III) sulphate + barium chloride →

c) zinc + mercurous nitrate →

d)tin + antimony(V) chloride →

e)calcium + water →

f)ferrous bromide + phosphoric acid →

g)the complete combustion of ethane, C2H4 →

h)calcium carbonate + hydrobromic acid →

7. a) How many grams of sulphuric acid will neutralize 10.0g of sodium hydroxide?

b)What volume of water vapour at 100oC and 110 kPa would also be introduced?

8.Calculate the mass of potassium chlorate needed to prepare 5.00L of oxygen gas at 24.0oC and 0.950 atm. (When using atmospheres, the gas constant, R=0.0821L ∙ atm ∙ mol-7 ∙ K-1).

The equation is KClO3 → KCl + 3O2.

9.Consider the following reaction, which takes place in an autoclave at 250oC and 800 atm.

NH3(g) + 7O2(g) → NO2(g) + 3H2O(g)
4 2

Into the reaction vessel has been placed 200L of NH3(g) and 120L of O2(g). The reaction is allowed to go to completion. Determine the quantity, in moles, of the gas that remains unreacted.

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