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

what is .282 repeating as a fraction

What was Romes 200 years of peace and prosperity called??

How do historians and learn about people who lived in the earliest historical eras.

How can you use 5 x 198 in the distributive property

what is 5/20 as in a percent

Why is cleisthenes generally considered the founder of Athenian democracy?

In an inelastic collision, momentum is conserved. True or false?

what wattage is a toaster that uses 5 amps from a 120 volt outlet

How do historians and learn about people who lived in the earliest historical eras.

Lisa had 3 dollars. she went to the bank and exchanged the 3 dollars for 30 dimes. Describe the relationship between the value of a dollar and the value of a