Hi, I noticed no ones helped you yet so I'll try to. We can remove the third option because if the water evaporates then there will be no mass (Obviously.) It becomes a gas and I don't think gas has a great mass. (It rhymes too.) The last option seems logically correct for me. If you freeze water, it will continue to weigh the same. Same with boiling water; the mass stays the same. I would go with "Adding more water will increase the mass". Hope I helped you! Good Luck!
Answer:
I'd Go. B. weigh everything, let the reaction happen, then weigh everything again.
Try dividing the 83.0 g by the molar mass of Li3PO4* 12H2O and then multiply that result by a number of H2O moles (12). You should get 3.0027 mol.
Answer:
Alpha decay
Explanation:
That's the definition of alpha decay