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Anna007 [38]
3 years ago
10

Please help with my science ?

Chemistry
1 answer:
fredd [130]3 years ago
7 0
Abrasion is the mechanical scraping of a rock surface by friction between rocks and moving particles during their transport by wind,glacier, waves, gravity and running water or erosion.
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when 6.25 grams of pure iron are allowed to react with oxygen , a black oxide forms. if the product weighs 8.15 g, what is the e
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We are given with the mass of  pure iron that reacts with oxygen to form an oxide which has a given mass as well. the mass of oxygen reacted is 8.15-6.25 g or 1.9 grams. THen we convert the mass of the reactants to moles. Iron is equal to 0.1119 moles and oxygen is equal to 0.1188. We divide each number to the less amount. Hence iron is 1 and oxygen is approx 1. The empirical formula hence is FeO or ferrous oxide or Iron (II) oxide.
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