Inorganic Chemistry Answers

_____Pb(NO3)2  +  _______KI  -->  ______PbI2  +  _______KNO3

 Calculate the mass of lead (II) iodide that is formed from 27.6 g of lead (II) nitrate. 

______C2H6  +  ______O2  -->  ______CO2  +  _______H2O

Calculate the mass of carbon dioxide formed when 7.80 g of benzene (C2H6) burns.

______C2H6  +  ______O2  -->  ______CO2  +  _______H2O

Calculate the mass of carbon dioxide formed when 7.80 g of benzene (C2H6) burns.

Calculate the molar mass of gold (II) oxide.

Calculate the molar mass of barium citrate.

Calculate the mass of the product that is formed when 127.56 g of calcium reacts with 149.52 g of nitrogen. Use a balanced equation and both mass-mass equations.

A sample of water contains: suspended matter = 100 mg; Ca(NO3)2 = 16.4 mg/L; MgSO4 = 24 mg/L; MgCl2 = 19 mg/L; NaOH = 40 mg/L and KOH = 56 mg/L. Calculate temporary, permanent and total hardness of the water sample in PPM. (Atomic masses of Na = 23; Mg = 24; K = 39 and Ca = 40).

Determine all the symmetry operations for the following compounds

 i) Triphenylphosphine

ii) complex - bipyramid

iii)Benzene derivative

iv)ICl₂Br₂

 How many moles are there in 3.65 x 1025 molecules of water?   

A piece of limestone was added to 1.0dm³ of 0.1mol/dm³ Hydrochloric acid. After the effervescence had stopped, 31.25cm³ of the resulting solution required 250cm3 of 0.05mol/dm³ sodium hydroxide for complete neutralization. Calculate the mass of lime stone

(r.a.m: H=1.0, O=16.0, C=12.0, Na=23.0, Cl=35.5, Ca=40.0)