Ch 5 Review Quiz

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how many atoms are in a mole?

6.02x10^23

combination reaction

A + B --> C

oxidation means a _____ of electrons and reduction means a ____ of electrons

loss, gain

the oxidation number for nitrogen in the compound Mg(NO3)2

+5

the oxidation number for an uncombined element

0

2 Fe2+ + Cl2 → 2 Fe3+ + 2 Cl1- which of the following statements is true?

Fe2+ is oxidized

2Na + Cl2 --> 2NaCl what type of reaction is this?

combination

an exothermic reaction _____ energy

releases


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