Science
posted by Bob .
How many grams of ammonium nitrate is equivalent to 1 gram of calcium nitrate

1 gram is certainly equivalent to 1 gram.
However, in terms of reaction potential, you need to compare moles.
So, how many moles in 1g of Ca(NO_{3})_{2}?
Then, how many grams in that many moles of NH_{4}NO_{3}?