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Loyalty discount! If the total amount of your purchases from the seller more than:

$1 the discount is 1%
$5 the discount is 2%
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$20 the discount is 5%
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190. Write the electron ion formulas: a) Sn2 +; B) Sn4 +; C) Mn2 +; D) Cu2 +; E) Cr3 +; E) S2-
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