Percentage of gold in 18 carat gold is:

Pure gold is 100 carat gold.

How will you convert 24 carat gold into 22 carat gold for making ornaments?

The amount of electricity which release 2.0g of gold from a gold salt is same as that which dissolves 0.967g of copper anode during the electrolysis of copper sulphate solution. What is the oxidation number of gold in the gold ion ? (At mass of Cu=63.5,Au=197)

Most jewellery is made of 22 carat gold. What is the percentage of gold in it?

What is 24 carat gold? How would you convert into 18 carat gold?

Pure gold is ………………..carat.

Which of the following are pure substances and which are mixtures ? Air, Milk,Graphite,Gasoline,Distilled water,Ice,Iodised table salt,Oxygen,One rupee coin, 22 carat gold,24 carat gold,Steel,Iron,Solid iodine.

the protective power of the lyophilic colloids is expressed in terms of gold number, a term introduced by Zsigmondy. Gold number is the number of milli - gram of the protective colloid which prevent the coagulation of 10 mLof red gold sol , when 1 mL of a 10 per cent solution of sodium chloride is added to it . thus smaller the gold number of lyophillic colloid, the greater is the protective power. On addition of one mL of sloution of 10 % NaCl to 10 mL. of red gold sol in presence of 0.025 g of starch the coagultion is just prevented . the gold number of starch is : 0.025, 0.25, 2.5, 25.

Relative density of gold is 19.3. The density of water is 1000 kg m^-3 . What is the density of gold in SI units.