ind7qWhabriasjay ind7qWhabriasjay

30-09-2016
Chemistry

contestada

given a 800 mg sample of thorium-231 decomposes via beta emission with a half life of 25.5 hours, how long would it take, in days, for the sample to decay down to 25 mg?

231 0 231
th -> beta pa
90 -1 91

800 mg/ 25 mg

Respuesta :

mikisha12 mikisha12

30-09-2016

267775678888899442267

Answer Link

Otras preguntas

what is the constant of proportionality for y=5/8x

The equation a=180(n-2)/n represent the angle measures,a in a regular n-sided polygon. When the equation is Solved for n,n is equal to a fraction with a denomin

Simplify this expression.

There were more dragons than knights in the battle. In fact, the ratio of dragons to knights was 5 to 4. If there were 60 knights, how many dragons were there?

In a neutral solution the concentration of_____

Suppose that each day, northern, central and southern California each use 100 billion gallons of water. Also assume that northern California and central Califor

A project manager is preparing two documents for risk management. One contains sources of overall project risk and also summary information on individual risks.

A sample of 1100 computer chips revealed that 77% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 76% o

HELP HELP I NEED A PARAGRAPH right a paragraph about racism give a quote from two different famous people.

If y = 1 and y = cos x , list the values of x where 0 degrees <= x <= 360 degrees to make these statements true.