14 date's between 1875-1964. hope this helps
A mercury dime contains 0.0723 troy ounces of silver. You would need 13.83 mercury dimes to get 1 troy ounce of Silver.
100 silver U.S. dimes make up 7.23 troy ounces of silver.
13.8
Presuming that you are referring to US dimes issued between 1875 and 1964 (dimes older than 1875 had different weights and/or fineness), dimes weigh 2.50 grams and are 90% silver (the remaining 10% is copper). This means that the ASW (Actual Silver Weight) is 0.07234 troy ounces. Thus, it would require 14 dimes (this number is rounded up; the precise number is 13.8236 dimes) to have one troy ounce of silver.
Silver & gold are weighed by the Troy ounce which is 31.1 grams.
If you're referring to a standard US weight ounce, 11.34 silver dimes weighed 1 ounce.Explanation: Silver dimes weighed 2.5 gm unworn, and a standard US weight ounce is 28.35 gm so 28.35 / 2.5 = 11.34.
1 ounce = 28.3495 grams 1.5 ounces = 28.3495 x 1.5 = 42.53 grams
Silver half dollars have about 0.362 Troy oz. of silver in them, so 3 of them would be 1.086 Troy oz.
Each Kennedy half that was minted in '64 or earlier had .36 troy oz of silver meaning a little less than three would equal an ounce of silver which is running for 29.30 an ounce last i checked. <><><><> Half dollars made 1965-1970 contained only 40% silver, instead of the 90% of earlier coins, so it would take more coins. Half dollars made after 1970 contain no silver.
The price of silver is generally given per troy ounce. There are 32.150747 troy ounces in a kilogram. The current price of silver (22 May 2008) is $17.960 USD per ounce, so that would make the value $577.43 USD per kilogram.
US quarters weigh 6.25 grams and of that there is 0.18084 oz of silver.
1 troy ounce = 31.1034768 grams