No
No.
No it does not contain Nickel, nickel is a metal and butter is made from milk solids (fat).
Because it has less sugar than regular jello. The calories in jello are primarily from sugar, so having no sugar in the jello will significanly reduce calories.
That it does not contain any of the metal nickel.
Nickel ores contain nickel and also iron, magnesium, sulfur, silicon.
Lime
No, nickel is an element. Silver is another element. Neither are alloys, silver only contains silver, nickel only contains nickel. "German silver", which is not actually silver, does contain nickel. It's a silver-colored alloy of nickel, copper and zinc.
yes
Gold and pure silver don't contain any nickel.
U.S. nickels weigh 5 grams each and contain 25% nickel with 75% copper.
Nickel and Cobalt are both elements, which means they are pure. Therefore, the do not contain anything else, so Nickel does not have Cobalt in it.