Chem
posted by Donald .
the equation is,
2KCL0subscipt3>2KCL+3Osubscript2
if 5.0 g of KCLOsubscript3 is decomposed, what volume of 0subcript2 is produced at STP?

Write the equation and balance it.
2KClO3 ==> 2KCl + 3O2
1. Convert g KClO3 to moles. # moles = grams/molar mass.
2. Using the coefficients in the balanced equation, convert moles KClO3 to moles O2.
3. Convert moles O2 to volume remembering at STP that 22.4 L/mole x # moles = ?? L.
Post your work if you get stuck.