Draw a module of
21 ÷ 4 .

answer: its c because when it has a magnet next to it it will move away from the mixture. hope this

step-by-step explanation:

could you provide figure.

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source:  

answer: 60%

explanation:

÷

= 60%