Sorry, no such coin as a "Kennedy silver dollar", JFK only appears on the Half dollars from 1964 to date. Look at the coin again and post new question.
One 40% Kennedy half dollar contains .14792 oz of pure silver. The silver proof coins were struck on 90% silver planchets and contain .36169 troy ounces of silver.
No Kennedy DOLLARS exist. But 7 Kennedy halves dated from 1965 to 1970 would have 1.0353oz of silver.
.14792 oz of pure silver in a 40% half dollar.
1Kg is about 35oz. Silver is $18.50/oz. So 1000g of silver is worth about $650.
one dollar
5,393,005 were minted and sold.
A peace dollar in "new" condition weighs 26.73 grams and is 90% silver. Thus, silver content is 24.05 grams. One troy oz is 31.10 grams. Thus, there is 0.77 troy oz of silver per dollar. Morgan dollars are the same.
About $56
It worth 1.1 Oz. of silver.
Silver spot price = about $14/oz
As of today about $17.00
Flowing Hair, Draped Bust, and Gobrecht silver dollars contain .8924 oz. Pure silver. Trade dollars contain .7874 oz. pure silver Liberty Seated , Morgan and Peace dollars contain .77344 oz. pure silver. Eisenhower silver dollars contain .3161 oz pure silver . American Silver Eagles contain a full oz. pure silver