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How many neutrons are in the radioactive isotope 40/19? a. 40 b. 19 c. 21 d. 20
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Calculate the number of grams of sodium in 3.00 g of each sodium-containing food additive.
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How many neutrons are in the radioactive isotope 40/19? a. 40 b. 19 c. 21 d. 20...
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