Assignment:
A compound of bromine and fluorine is used to make UF6, which is an important chemical in processing and reprocessing of nuclear fuel. The compound contains 58.37% by mass of bromine. Determine its empirical formula.
A) BrF
B) BrF2
C) Br2F3
D) Br3F
E) BrF3
Magnesium reacts with iron(III) chloride to from magnesium chloride(which can be used in fireproofing wood and in disinfectants) and iron.
3Mg(s) + 2FeCl3 → 3MgCl2 + 2Fe(s)
A mixture of 41.0 g of magnesium(molar mass =24.31 g/mol) and 175 g of iron(III) chloride (molar mass=162.2 g/mol) is allowed to react. What mass of magnesium chloride(molar mass =95.21 g/mol)
is formed?
a) 68.5 g MgCl2
b) 77.0 g MgCl2
c) 71.4 g MgCl2
d) 107 g MgCl2
e) 154 g MgCl2