irelannnf irelannnf

18-01-2017
Physics

Answered

The half-life of a certain isotope is 15 minutes. How much of a 400 g sample will remain after 90 minutes?12.5 g6.25 g26.7 g66.7 g25 g

Verified Answer :

lunabischoff lunabischoff

18-01-2017

There is a total of 6 half lives that need to take place.

ONE HALF LIFE = 200

TWO HALF LIFES = 100

THREE HALF LIFES = 50

FOUR HALF LIFES = 25

FIVE HALF LIFES = 12.5

SIX HALF LIFES = 6.25

The answer is 6.25g

Answer Link

Related Questions

Brief periods of spiky brain wave patterns called sleep spindles are characteristic of sleep REM stage 1 stage 2 stage 4

A 4340mg sample of an alcohol contains 1510mg of O 2260mg of C and 570mg of H What is the percent of Hydrogen

9 stores is 3 of stores

Which best explains why Brown vs Board of Education was an importantlegal decision

There are 9 cherry cokes 3 diet cokes and 4 coke zeros in a cooler What is the proabiliyt of selecting a drink and getting a cherry coke then a coke zero withou

You go to the vending machine to get a drink and look at the options Which option will most likely have the greatest number of calories

The man responsible for developing the colonys first cash crop

1416 in simplest form

Ben drinks tea at an incredible rate he drinks 3 12 liters of tea every 23 of an hour how many liters of tea does he drink in one hour

What does the word valentine mean

Web Analytics