Agamberiecy Agamberiecy

01-06-2017
Chemistry

contestada

Iodine-131 is a radioactive isotope with a half-life of 8 days. how many grams of a 64 g sample of iodine-131 will remain at the end of 24 days? select one:
a. 48 g
b. 8 g
c. 56 g
d. 32 g

Respuesta :

dec77cat dec77cat

01-06-2017

T= 8 d
m₁=64 g
t=24 d

m₂-?

n=t/T
n=24/8=3

m₂=64/2ⁿ

m₂=64/2³=8 g

b. 8 g

Answer Link

Otras preguntas

Select all the names that could be used to describe the figure.

who is the Prime Minister of India

Select the correct answer. Which principle of exercise involves an increase in activity during exercise training that results in adaptation? A. Specificity B.

Banjo is baking his favorite dessert the recipe calls for a 5/8 of a stick of butter but he wants to double the recipe how much butter will bjorn need

Pls, help on this one! Today, I have a test and I forgot to do this part!

I need help asap thank you

I need help on this what is RS

factories x³ + 4x(with the steps)

Someone plzzzz helpppp meeeee

When two verbs are used together as a compound verb, _____. A) both verbs are conjugated B) The first verb is conjugated and the second is left in infinitive C)