There is really no way to calculate nickel percent in chocolates. There will be a different amount in all kinds of chocolates and none in some.
Nickel
A nickel is 5 percent of a dollar.
The president on a nickel is Thomas Jefferson. As of 2014, the US nickel is composed of 25 percent nickel and 75 percent copper.
The ratio nickel/EDTA is 1:1.
2%
If that's 1 dollar, a nickel is 5%.
The amount of 'nickel' in a nickel has not changed, it's still .250.
Most steels contain about 35 percent of nickel. They also contain about 26 percent chromium. These usually have the highest corrosion resistance.
0.69 Angstrom
1
20%
1 nickel = 5 cents $1 = 100 cents5/100 * 100% = 5%