you have to go
mol=g/mm
mol=grams/molecular mass
to find how many moles are in Fe2O3
how to set up or approach these
1. Calculate the mass in grams of iodine (I2) that will react completely with 48.9 g of aluminum (Al) to form aluminum iodide (AlI3).
Do I need to find the mass as a whole for the entire compound, then convert?
2. The formula for rust can be represented by Fe2O3. How many moles of Fe are present in 24.4 g of the compound
And I don't know how to get started on this one.
2 answers
For the AlI3 question.
1.Writ the equation and balance it.
2.Convert 48.9 g Al to moles; moles = grams/atomic mass.
3.Using the coefficients in the balanced equation, convert moles Al to moles AlI3.
4.Convert moles AlI3 to grams. grams = moles x molar mass.
Post your work if you get stuck.
For the second part.
moles = grams/molar mass.
1.Writ the equation and balance it.
2.Convert 48.9 g Al to moles; moles = grams/atomic mass.
3.Using the coefficients in the balanced equation, convert moles Al to moles AlI3.
4.Convert moles AlI3 to grams. grams = moles x molar mass.
Post your work if you get stuck.
For the second part.
moles = grams/molar mass.
1 answer