One tael of gold is equal to 50 grams.

According to the conversion of weight units,

1 kilogram (kg) = 2 pounds

1 pound = 500 grams

According to the metric system: 1 pound = 10 taels = 100 money

1 money = 5 grams

Then 1 tael = 1/10 * 500 grams = 50 grams.

Expanded Information:

Basic Properties of Gold

The color of gold is Golden yellow, metallic luster, difficult to decompose. Hardness 2-3, pure gold 19.3, melting point 1064.4 ℃; with good ductility, can be pressed into a thin foil, with very high heat transfer and electrical conductivity, the resistance of pure gold is 2.4 p. Pure gold has a good resistance to chemical corrosion, is the best plating material.

Gold as a precious metal, has good physical properties, "real gold is not afraid of fire" is the chemical stability of gold is very high, not easy to chemical reaction with other substances, do not have to worry about oxidation and discoloration. Even in the molten state will not oxidize and change color, after cooling, as usual, golden. Density, feel heavy.

Toughness and ductility, good conductivity. Pure gold has a brilliant yellow, but mixed with other metals, the color changes, such as gold-copper alloy was dark red, silver alloy was light yellow or off-white. Gold is easy to be ground into powder, which is the reason why gold is dispersed in nature, pure gold jewelry is also easy to be worn and reduce the portion.

Baidu Encyclopedia - Units of Weight