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How do you you convert 100 percent gold to 91.6 percent gold?
The answer is in the question. Take 91.6 units of gold and add 8.4 units of impurities. This is equivalent to taking 100 units of gold and adding 100 x 8.4/91.6 = 9.17 units of impurities.
How much value is in an 11 year old gold 1-dollar coin?
If you are referring to the Sacajawea "gold" dollar coins with an Indian on the front and an eagle in flight on the reverse. It is only worth $1. It is not gold, but rather an alloy of brass and has no value beyond face value.
What is the mass of gold that has a volume of 10 and density of 19.3?
It is impossible to answer the question since there are no units given. Volume of 10 what? The density of gold is 19.3 gcm-3 which may imply that the volume is given in SI units, but that could be cubic metres, cubic centimetres or cubic micrometres.
What is the value of 5 lira?
At the time of this answer, about 215 milligrams of gold.
What is the value of 1986 Krugerrand?
Its value is based only on the gold it contains -- currently about $600 per ounce.
