jakaylagriffin4283 jakaylagriffin4283

15-05-2018
Chemistry

contestada

He radioisotope radon-222 has a half-life of 3.8 days. how much of a 65-g sample of radon-222 would be left after approximately 15 days?

Respuesta :

24-05-2018

Given: Half life of Rn = 3.8 days
Therefore in 15 days, system crosses 15/3.8 = 3.94 ≈ 4 half-life

Now, Initial amount of Rn = 65 g

∴ Amount of Rn left after 4 half life i.e. 15 days = [tex] \frac{65}{2^4} [/tex] = 4.06 g

Answer Link

Otras preguntas

How could this sentence be revised to clarify its meaning? Taxiing on the runway, the radio tower was in contact with the pilot. A) The plane landed safely. E

An art teacher had 2/3 gallon of paint to pour into containers if he poured 1/8 gallon of paint into each container until he ran out of paint how many containe

What is the significance of the battle at Poitiers in France in 732 CE

What type of appeal is used in the following passage? You know the fine job Senator Chang has done for our state. Do you really want to take a chance on someon

Ashton’s gross pay is $82,000. he receives tax credits of $2,000. he pays total taxes of $4,500. what are his taxable and disposable incomes? ashton’s taxable i

What does Oberon realize when he sees Demetrius following Hermia? Question 6 options: Puck has messed up, and dosed the wrong Athenian with the love potion. Her

Who is credited with popularizing the heliocentric model of the solar system?

Floyd is an inspiring music artist he has a record contract that pays him a base rate of $200 a month and an additinal $12 for each album he sells last month he

How did hurricane katrina lead to renewed concerns over civil rights in the united states? (5 points government response was swift and extensive and most of the

the process by which a cultural trait is spread from one society to another A. acculturation B. cultural diffusion C. adoption D. imperialism