Answer:
i am not sure but its 2 ican"t qry
Explanation:
If the crucible wasn't covered with a lid the reactants may have produced a gas that was released into the surroundings, or mass may have been lost in the form of water vapour.
I would say the last one because unlike beta and alpha rays they will have no effect on the mass or atomic number because they are just composed of high energy radiation
D an example of polygenic inheritance
ps this is more biology than chemistry
