answersLogoWhite

0


Best Answer

25%

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What percent of potassium-40 remains after two half-lives?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the half life of uranium 238 if 85.719 percent of any given amount remains after 1 billion years?

The half-life of uranium-238 is approximately 4.47 billion years. If 85.719% of the original amount remains after 1 billion years, then the remaining 14.281% would have decayed in that time period.


If two quantities are directly proportional when one quantity increases by 10 percent what does the other do?

If two quantities are directly proportional, when one quantity increases by 10 percent, the other quantity will also increase by 10 percent. This means that the relationship between the two quantities remains consistent as they change by the same proportion.


How do you write .2 percent in words?

two-tenths of a percent


How do you spell out 2.25 percent?

The percentage 2.25% is "two point two five percent" or "two and a quarter percent."


How do you write two percent?

Two percent = 2% or 0.02


What is 2 and a half percent of 200?

The answer to two and a half percent is easy. Simply find one percent,double it to get two percent and then half one percent to find the half. Put them together and you have two and a half percent.


How do you write out 2.72 percent in English?

2.72 percent in English = two and seventy two hundredths percent


What is the percent of one of every two?

Fifty percent is one of two


What is two percent of five billion?

two percent of five billion dollars


What is 2 percent in words?

two percent


How many syllables does remains have?

There are two syllables in the word remains. The syllables of the word are re-mains.


120 percent of what number is one hundred and two percent?

120 percent of the number 85 is one hundred and two.