kelseyyraee kelseyyraee

01-11-2016
Chemistry

contestada

How many milligrams remain of a 15.0 mg sample of radium-226 after 6396 years? The half life of radium-226 is 1599 years.

Respuesta :

kaity0001 kaity0001

01-11-2016

There are 4 half lives of radium-226 in 6396 years. 15.0 divided by half 4 times (15.0/2= 7.5, 7.5/2 = 3.75, 3.75/2 = 1.875) equals 1.875 mg of radium-226.

Answer Link

Otras preguntas

Is this a good thesis statement for my essay? The Earth has many life-threatening problems caused by humans. One of these problems is the over-consumption of w

To calculate the area of the front surface of a box,you (a) add the length to the height (b) add twice the length to twice the height ( c) multiply the length b

can humans cause a imbalance in the food chain

Log4(6x-8)=3 Help please

how does art inspire some people

simplify : 81s^2/36s^2

The empirical formula of styrene is CH; find the % composition for H and CH. How many atoms are present in a 2.00 gram sample of styrene? PLEASE HELP! THANK YO

Why should mass not be represented by an arrow?

what is the balanced chemical equation for caffeine?

write the ratio 6 ft to 4yd as a fraction in simplest form.