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jack prepared copper(11) sulphate by adding a metal oxide to the acid. jill prepared sodium chloride by acid/alkali reaction. name the metal oxide and acid jack would use to mak
A hydrocarbon z with molecular mass 78 on combustion gave 3.384g of carbon (IV) oxide and 0.693g of water. Determine the molecular formula of Z and draw its structure. [H=1, C=12,
#questionproperties of p block elements ..
Write down the chemical equations for the total burning of propane and butane gas in air. Show whether the substances are liquid (l), gaseous (g), or solid (s) under
Which one pair of atoms or ions will have same configuration: (1) F + ans Ne (2) Li + He - (3) C l - and Ar (4) Na and K Ans: Cl - an
Name the Which is a covalently bonded crystal? germanium
Calculate the total heat (in J) needed to convert .777 moles of gaseous ethanol at 300 degrees C and 1 atm to liquid ethanol at 25 degrees C and 1 atm. Extra info: b.p. 78.5 degree
Conjugate-base anion of diethyl malonate The conjugate-base anion of diethyl malonate would be formed with sodium ethoxide, but it would not react with bromobenzene due to the
what is the role of structural protein, their types, how are they formed, significance.
why do soap not work in hard water ?
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