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.
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 à 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)
a) 68.5 g MgCl2
b) 77.0 g MgCl2
c) 71.4 g MgCl2
d) 107 g MgCl2
e) 154 g MgCl2
Handwritten answers show how to find empirical formula and products formed for 2 multiple choice questions.