natalieraudet natalieraudet

23-03-2020
Chemistry

contestada

If 50% of a radioactive element remains after 4000 years, what is the half-life?

Respuesta :

Mistystar4881 Mistystar4881

27-03-2020

Hey there!

A half-life means after a certain amount of time, half of that substance will be gone/changed after that time.

If 50%, or half, of the element remains after 4000 years, that means the half life must be 4000 years.

Hope this helps!

Answer Link

Otras preguntas

The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of 98.37degreesF and a standard deviation of 0.49degreesF. Using

: sÃ¡ndwiches, tacos, sodas, bananas : mapas, capitales, paÃses, nacionalidades : literatura, matemÃ¡ticas, geografÃa, lenguas extranjeras : microscopios, exp

|x−5|=2x |x−5|=2x .

PLEASE HELP ME 98 POINTS!! Question 1 What is subsistence farming? Question 1 options: Farming to feed the whole world Farming for fun Farming to feed your fa

Which of the following is a solution for the inequality 2x < 9? x = 5.5 x = 4.5 x = 4

During her speech, Silvia sees audience members nodding in agreement when she starts talking about why she believes it is important to take care of the environm

Kangaroo Company had a transaction that caused a $5,000 increase in both assets and total liabilities. This transaction could have been a(n) _________.a. purcha

What mexican revolutionary is made fun of in la cucaracha

You work for a pharmaceutical company that has developed a new drug. The patent on the drug will last 17 years. You expect that the drug's profits will be $ 1

If 100 units of product L are sold at a unit price of $10 and only 25 units are sold at a unit price of $20, one can conclude that demand for L is A) elastic