15mg of Bismuth-213, with a half-life of 46 minutes, are administered to a cancer patient in Targeted Alpha Therapy (TAT). How much Bismuth-213 remains 6 hours later?

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory

I’m an electrically neutral atomic any element, there are equal numbers of