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Af = Ao (1/2) ^ t/h

Af = 200 (1/2) ^ 10/3
i cant solve from here

punch it in the calculator.
i got 0.07; to the nearest hundredth

the answer is 19.84 mg

i got the answer too but i forgot how i did it

srry i know only grade 8 maths

h is the Planck's constant ryt ?

h is the half life period

Try 25mg to the power of 2/3. Is that 19.84mg? I don't have scientific calculator.

i got it. .

Try...200*(1/2)^10/3

punch in the calculator the first equation u've given

find the cube root of .5 to tenth power, then multiply to 200

My value is correct.

200 times (1/2) to the power of 10/3. It gives you 19.84.

First find 0.5 to the power of 3.333333.
Then multiply by 200.