gauravsingh6990 gauravsingh6990

19-06-2017
Chemistry

contestada

If the half-life of a radioactive substance is 2 seconds, how much of a 100-gram sample would be left after 8 seconds?

Respuesta :

dec77cat dec77cat

19-06-2017

m₀=100 g
T=2 s
t=8s

m=m₀/{2^(t/T)}

m=100/{2^(8/2)}=100/2⁴=6.25 g

Answer Link

Otras preguntas

The length of Garden B is 3 more than Garden A. Write and solve an equation you can use to find the length [letter l] of Garden A.

-(2+3r)-8r solve this using distributive property

Which question should you ask yourself when you are attempting to discover reasons to support your thesis statement? A Who? B Where? C When? D What?

Johann baked 24 cookies for a picnic with his friends. Of the 10 friends he invited, 7 were able to attend the picnic. If Johann gave each of his friends the sa

The plasma membrane has a double layer of phospholipids with _____ dispersed throughout.

Marcus baked a loaf of banana bread fora party . He cut the loaf into equal size pieces . At end of the party , there were 6 pieces left . Explain how you can

What is the slope of the line shown below?

I need help with geometry 7.1 practice B

Government protection of ________________ was a grave concern for the founding fathers. A. air pollution B. unsafe foods C. property rights D. ethnic minor

The amount of a harmful chemical to which a person is exposed is the ____. a. dose b. response c. pollutant d. toxin