Radium-226, a common isotope of radium, has a half-life of 1,620 years. how many grams of a 120-gram sample will remain after t years? which equation can you use to solve this problem?

Step-by-step explanation:

We have been given that Radium-226, a common isotope of radium, has a half-life of 1,620 years.

We will use half life formula to solve our given problem.  

, where,  

,

,

.

As we are told that the sample has 120 grams, this means that a equals 120. Upon substituting our given values in half life formula we will get,

Therefore, the equation represents the remaining amount of Radium-226 after t years.

The equation represents the remaining amount of Radium-226 after t years.

Given:

The half-life of a common isotope of radium (Radium-226) = 1,620 years

Initial value (a) = 120 gram

We will use the half-life formula to solve our given problem.

Where,

a = Initial value

h = Half life

t = Time

So,

Therefore, the equation represents the remaining amount of Radium-226 after t years.

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