How should the student label each circle in this diagram?

reaction A: chemical; reaction B: nuclear
reaction A: nuclear; reaction B: chemical
reaction A: strong nuclear; reaction B: weak nuclear
reaction A: weak nuclear; reaction B: strong nuclear

Reaction A: Chemical; reaction B; nuclear

Explanation: Hope this helps :)

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons