monyea124 monyea124

24-05-2017
Biology

contestada

The half-life of radon-222 is about four days. How long will it take for a sample of radon-222 to decay to 3% of its original amount?

Respuesta :

joehalford joehalford

27-05-2017

-50% = 4 days
4/50= days to decay by 1%
4/50 *3 = 3% loss = 0.24 days = 5.76 hours

Answer Link

Otras preguntas

(3/5) divided by 4 please help !!!

A medical researcher measures the increase in heart rate of patients under a stress test. What kind of variable is the researcher studying?

What is two plus two?

Read the following short excerpt of student writing. Use your vocabulary and grammar knowledge to determine which suggestions you would make to improve his or h

Principal: $1500. Annual interest rate: 72%. What is the interest after 6 months?

Combine the like terms: 4y + y + y

Consider Frank’s decision to go to college. If he goes to college, he will spend $21,000 on tuition, $11,000 on room and board, and $1,800 on books. If he does

Simplify each expression using the order of operations. Then, match the expression (term) on the left with its solution (definition) on the right. (4 points) Gr

who was the president of Somalia?

which three metal do you think might be present in alnico explain ? ans which one are magnetic