If you are referring to US Coins here are some popular ones. The 1964 Kennedy half dollar, Franklin half dollars until 1963, and Walking Liberty half dollars (a/k/a Morgan half dollars) contain 90% silver.
Silver is a mineral found in many parts of the world. It was found in the American Rocky Mountains around Colorado, it's been mined in Mexico, South Africa, Russia, and pretty much all over.
The US silver quarter contains 90% silver and 10% copper.
One example of a compound that contains silver is silver nitrate, AgNO3.
It contains 1 ounce of silver.
1 Morgan Silver Dollar contains 0.77344 Troy ounces of silver while 4 silver quarters contain 0.72336 ounces of silver (0.18084 X 4). The Morgan Silver Dollar contains more silver than 4 silver Quarters.
A US silver dollar from 1840 to 1935 contains .77344oz of pure silver.
An American dime, minted before 1965, contains 90% silver and 10% copper. Dimes minted after 1965 have no silver content and are made from a copper-nickel blend.
A 1946 shilling from the UK contains 50% silver.
Probably a mixture of metals that contains 10% of silver.
The Morgan dollar is 90% silver, or contains about .77 troy ounce of pure silver.
Thay are the same -- each quarter contains .18084 ounce and each half contains .36169 ounce
822 silver refers to silver that contains 82.2% pure silver and 17.8% other metals. This silver purity is commonly used in countries like Egypt and Lebanon for making jewelry and household items. It is slightly lower in quality compared to sterling silver, which contains 92.5% pure silver.
One pre-1965 silver dime contains 2.25 grams of silver (90% silver, 10% copper, total weight of 2.5 grams), and one roll contains 50 dimes, which makes 112.5 grams of silver per roll.