an element with mass 430 grams decays by 27.4% per minute. how much of the element is remaining after 19…

an element with mass 430 grams decays by 27.4% per minute. how much of the element is remaining after 19 minutes, to the nearest 10th of a gram?

an element with mass 430 grams decays by 27.4% per minute. how much of the element is remaining after 19 minutes, to the nearest 10th of a gram?

Answer

Explanation:

Step1: Identificar la fórmula de decaimiento

La fórmula para el decaimiento exponencial es $A = A_0(1 - r)^t$, donde $A_0$ es la cantidad inicial, $r$ es la tasa de decaimiento y $t$ es el tiempo. Aquí, $A_0=430$ gramos, $r = 0.274$ y $t = 19$ minutos.

Step2: Sustituir valores en la fórmula

$A=430\times(1 - 0.274)^{19}$. Primero, calculamos $1-0.274 = 0.726$. Entonces, $A = 430\times(0.726)^{19}$.

Step3: Calcular $(0.726)^{19}$

$(0.726)^{19}\approx0.00197$.

Step4: Calcular el valor de $A$

$A = 430\times0.00197\approx0.8$ gramos.

Answer:

$0.8$ gramos