sanelmarkisic sanelmarkisic

20-06-2018
Chemistry

contestada

The half-life of 131I is 8.021 days.What fraction of a sample of 131I remains after 24.063 days

Respuesta :

JoannaBlackwelder JoannaBlackwelder

20-06-2018

24.063/8.021 = 3 half lives
(1/2)^3 =1/8

Answer Link

Otras preguntas

A machine makes bolts that are 12 mm long. The bolts are considered acceptable if they are within 0.2 mm of 12 mm. What is the longest the bolt can be and sti

Ensuring that the final results meet desired standards is called _________ control

Why was Ghandi critical to the success of the all India nationalist movement

In pea plants, the gene for the color of the seed has two alleles. In the following Punnett square shown below, the dominant allele (Y) represents yellow and th

what effect did unification og germany have on global deveopment and relations

need held with this question

How many whole numbers are there with not more than 4 digits?

The sum of a number and 5 times a second number is represented by the equation a+5b=19 . The sum of half of the first number and twice the second number is rep

A difference of two _____ is an expression that contains two perfect squares, with one subtracted from the other.

The pyramid shown has a square base that is 18 inches on each side. The slant height is 16 inches. What is the surface area of the pyramid?