Okay I have a lot of questions here & I really need them answered I'm currently failing chemistry I have a 55 percent I don't understand any of this so here they are:
After 60 days a 4.0g sample of a radioactive element contains only .125 g what is the half-life of the element?

The half-life of phosphorus -32 is 23 days. How many days are required for 70% of a given amount to decay?

What percentage of a substance will remain after 2, 3, 4, and 5 half-lives?

What percentage of the isotope remains after 10 days?

How many grams of a 50g sample would remain after 5 days?

What is the half lif

Question

Okay I have a lot of questions here & I really need them answered I'm currently failing chemistry I have a 55 percent I don't understand any of this so here they are:
After 60 days a 4.0g sample of a radioactive element contains only .125 g what is the half-life of the element?

The half-life of phosphorus -32 is 23 days. How many days are required for 70% of a given amount to decay?

What percentage of a substance will remain after 2, 3, 4, and 5 half-lives?

What percentage of the isotope remains after 10 days?

How many grams of a 50g sample would remain after 5 days?

What is the half lif

aaronq · Answer

https://www.youtube.com/watch?v=WAsmY4ocWSA