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Reaction Stoichiometry Help?!?!?!?

How do you find the masses of Iron (III) oxide and Aluminum that will be used to produce 15g of iron? The Reaction is Fe2O3 + 2AlS -gt; 2Fe + Al2O3

Answer:

While paying my way through college, there were days that I worked all day, then went to my night job which went until 3am, went home and got a couple hours of sleep and then had to get up and go to class or back to my day jobUntil you reach the rung on the American Dream where you want to settle, you have to work.if you have pride that is, and aren't a loser parasite.
Yes you could be punished but workings seventy hours is to much for safety reasonsTells that to your boss.or call OSHATake a day off partyGet another job live a little.
I dunno lots of places do things they aren't supposed to but you need to stay consistent with your work hours and sleep hours depriving yourself sleep to please your boss or wallet, could some day cost you your life for falling asleep at the wheel or getting injured at work.do you think your boss will take care of your family after you are gone?! wake up bro smart sleep smart so as to be able to work another dayworking 31 hours is not smart, sorry and why did you stay up all night when you were not needed after all?!.had they called me, at 10-30 and said to come in at 5 , I'd say see you at nine, I need to sleep, I'm not a robot!!! but who MADE you work those insane hours? eh? or did you volunteer to do the hours?! it makes a difference because the people who work like crazy are expected to keep doing that!!!! and when you don't then they get mad at you!! you set it up!!! and I know bosses.the hard workers always get the extra work and abuse, and they never ask anyone else stop working crazy hours and work reasonable overtime and let it be known you need your 8 hours sleep plus drive time best wishes
I would pretty much count on no jobYou can't just up and decide I'm going out of town and leave a message for the boss saying thisYOU don't own the businessHe doesEven if you woke up late, you should have gone inIf you don't like the way a business runs, then you really need to open your own and find out about real work.
Answers mass of Al 7.2 g Al mass of Fe2O3 21 g Fe2O3 (answers rounded to account for sig figs) Explanation In order to find the masses of Iron(III) oxide and Aluminum needed to produce 15 g iron, you can work backwards using dimensional analysis to find out how much iron(III) oxide and Aluminum will be used to produce 15 g ironYou must use stoichiometric ratios and know the molar masses of the above substances to do this mathStoichiometric ratios are the ratios that substances react and are produced in a chemical reactionFor example, you have 2 moles Aluminum to 1 mol Al2O3 to 2 mol Fe to 1 mol Fe2O3Combine this with the molar masses and,you do these calculations as such: mass of iron (III) oxide 15 g Fe (1 mol Fe/55.845 g Fe) (1 mol Fe2O3/2 mol Fe) (159.69 g Fe2O3/1 mol Fe2O3) 21.446 g Fe2O3 21 g Fe2O3 (for sig figs) mass of Aluminum 15 g Fe (1 mol Fe/55.845 g Fe) (2 mol Al/2 mol Fe) (27 g/1 mol Al) 7.252 g Al 7.2 g Al

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