HELP WILL MARK BRAINLIEST
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Mass of an element = 310 grams
Percentage of the element that will decay in a minute = 5.7%
Quantity of the element that will decay in one minute :
Thus, 17.67 grams of the element will decay every minute.
Quantity of element that will decay after nine minutes :
Thus, 159.03 grams of the element will decay after 9 minutes.
Quantity of element that will remain after 9 minutes :
Thus, 150.97 grams of the element will remain after nine minutes.
We can round off 150.97 to 151.00.
Therefore, <u>151.00 grams</u> of the element will remain after 9 minutes.