How many protons and neutrons does Fe2 + have?

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Hydrogen is a pure substance represented by chemical symbol H. which of the following best describes hydrogen?

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What is the limiting reactant if 8 g of Ba reacts with 2.8 g of Al2 (SO4) 3?

In a mixture of oxygen and nitrogen gas, 80.0 percent of the total gas pressure is exerted by the nitrogen. if the total pressure is 2.0 atm, what pressure does the oxygen exert?

Balance the following redox equation in acidic solution using the smallest integers possible and select the correct coefficient for the H + (aq) ion.

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If a solution contains 1 x 106 hb molecules, how many o2 binding sites are available? if the solution of hb is 50% saturated with o2, how many binding sites are occupied by o2?

A. what are isotopes? b. how are the isotopes of a particular element alike? c. how are they different?

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