Sunnkhueli5ceySz Sunnkhueli5ceySz

03-11-2016
Chemistry

contestada

After three half-lives,what fraction of a radioactive sample remains.

Respuesta :

MartianManiac MartianManiac

14-11-2016

after1 half life 50 percent
after another half life 50 percent of 50 percent which is 25 percent
after 3 half lifes 50 percent of 50 percent of 50 percent which is 50 percent of 25 which is 12.5 percent
12.5 percent is left

Answer Link

Otras preguntas

the measure of an angle is 12 degrees less than its complement. What is the measure of the smaller angle in degrees?

72 is what percent of 180

Jasmine is having a birthday party with snacks and activities for her guests .At one table five people are sharing three quarters of a pizza .What equal sized p

write 22/3 as a mixed number in simplest form

how does the definition of PERCENT help you write fraction and decimals equivalents?

Which is greater 2 dm or 200 mm

erry wants to start a small business producing jelly made from marine algae. Which of these algae should he select for this purpose?

It takes 48,000 gallons of paint each year to paint a large bridge. Each of the 12 painting crews use the same amount of paint. How many gallons of paint does e

the width of a rectangle is 3 inches less than its length.the perimeter is 130 inches.Whats the dimension of the rectangle

What is the role of a foilin a literary work?