Estoria29 Estoria29

02-02-2017
Biology

contestada

After three half-lives, a sample contains 20 grams of parent isotopes. How many grams of the parent isotope were present to start?

Respuesta :

MimzyTheDragon MimzyTheDragon

02-02-2017

160 grams i believe. have a good day

Answer Link

Otras preguntas

Please help answer the following question.

-20 less than or equal to 2x -20 less than or equal to 30

What did the british do to the United States economy in the years following the Revolution?

Solve t/5=u for t please show steps.

Please help me solve this paper

About how much of ocean water is dissolved salts? A. 0.04% B. 0.4% C. 4% D. 40%

transcription definition

Why was it important that civil service positions were not hereditary? A) so officials would be well-qualified B) so officials would be diverse C) so officials

35. One expressed power of Congress stated in the Constitution is the power to a. coin money b. create treaties. c. create schools. d. establish prisons.

can someone answer this.