A Certain Radioactive Isotope Has A Half-Life Of 4.28 Minutes. If We Initially Have 7168 Grams Of This Substance, How Many Half-Lives Will Pass Until 7 Grams Remain? Your Answer Should Be A Whole Number.

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# A Certain Radioactive Isotope Has A Half-Life Of 4.28 Minutes. If We Initially Have 7168 Grams Of This Substance, How

A Certain Radioactive Isotope Has A Half-Life Of 4.28 Minutes. If We Initially Have 7168 Grams Of This Substance, How Many Half-Lives Will Pass Until 7 Grams Remain? Your Answer Should Be A Whole Number.