The answer to letter b is
The reaction will be: FeBr2 + K --> KBr + Fe
Balancing gives: FeBr2 + 2K --> 2KBr + Fe
The molar mass of FeBr2 is 55.85 + 2*79.9 = 215.65 g/mol.
We divide 40 g / 215.65 g/mol = 0.185 mol FeBr2
Based on stoichiometry:
(0.185 mol FeBr2)(2 mol KBr/1 mol FeBr2) = 0.370 mol KBr
This link might help you!!
https://www.eiu.edu/biology/bio1500/writing_a_lab_report.pdf
Part 1 : a black dwarf is a theoretical stellar remnant part: 2 idk
A. Pyrite is an ore of gold and is used to jewelry making is a false statement