An ore contains Fe3O4 and no other iron. Theiron in a 40.2-gram sample of the ore is allconverted by a series of chemical reactions toFe2O3. The mass of Fe2O3 is measured to be28.3 g. What was the mass of Fe3O4 in thesample of ore?Answer in units of gA 19.2 g sample of iron ore is treated asfollows. The iron in the sample is all convertedby a series of chemical reactions to Fe2O3.The mass of Fe2O3 is measured to be 20.4 g.What was the mass of iron in the sample ofore?Answer in units of g
Buying used tires is a complete waste of cash. For just a few bucks more you can purchase a quality budget price brand and model of tire. Tires are simply too important to buy used.
Buying used tires is a complete waste of cash. For just a few bucks more you can purchase a quality budget price brand and model of tire. Tires are simply too important to buy used.
You should consider a few things. 1. How many tires you need. 2. How much tread life remains. 3. Look for bulges or busted belts in the tire(s). 4. Make sure tire(s) were not run on while being flat. (usually leaves a ring or gouge on sidewall) 5. Feel inside of each tire for nails or other objects that have punctured through the tread.
The tread that's left is the most important thing. You don't want to buy a set of tires that you will have to replace again in a month . The more tread that's left on the used tire, the more expensive it will be. In general, the overall condition, including the tread and making sure theres no dry rotting around it. Something like a faulty valve can be easily replaced for a dollar or two by whoever is putting your tires on.
2 Fe3O4 + . → 3 Fe2O3 + . (28.3 g Fe2O3) / (159.6887 g Fe2O3/mol) x (2/3) x (231.5333 g Fe3O4/mol) 27.4 g Fe3O4 2 Fe + . → Fe2O3 + . (20.4 g Fe2O3) / (159.6887 g Fe2O3/mol) x (2/1) x (55.8452 g Fe/mol) 14.3 g Fe
The tread that's left is the most important thing. You don't want to buy a set of tires that you will have to replace again in a month . The more tread that's left on the used tire, the more expensive it will be. In general, the overall condition, including the tread and making sure theres no dry rotting around it. Something like a faulty valve can be easily replaced for a dollar or two by whoever is putting your tires on.
2 Fe3O4 + . → 3 Fe2O3 + . (28.3 g Fe2O3) / (159.6887 g Fe2O3/mol) x (2/3) x (231.5333 g Fe3O4/mol) 27.4 g Fe3O4 2 Fe + . → Fe2O3 + . (20.4 g Fe2O3) / (159.6887 g Fe2O3/mol) x (2/1) x (55.8452 g Fe/mol) 14.3 g Fe
You should consider a few things. 1. How many tires you need. 2. How much tread life remains. 3. Look for bulges or busted belts in the tire(s). 4. Make sure tire(s) were not run on while being flat. (usually leaves a ring or gouge on sidewall) 5. Feel inside of each tire for nails or other objects that have punctured through the tread.
