Strontium is a radioactive material that decays with a continuous rate (k) of -0.0244. If there are 30 grams of strontium present today and it decays continuously, how much will be present in 20 years?

18.42 g

Step-by-step explanation:

Using the exponential growth / Decay function :

A = Pe^kt

A = final amount ; P = initial amount, t = number of years ; t = 20

A = 30e^-(0.0244 * 20)

A = 30e^-0.488

A = 30 * 0.6138528

A = 18.415586

Strontium present after 20 years will be :

18.42 g

whole number data type

step-by-step explanation:

as whole number type represents whole number

like 1, 2 ,3, 4

in other words the whole numbers are those numbers which cannot be written infraction.

since we can take days as a whole number i.e 1 day 2 day and we cannot write 1.2 day hence we will use whole number data type

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