After 100 years, 1/32 of the original amount of a substance remains. What is the substance half-life?

Q: antity of U-232 remains after 30 yea

A: The quantity remains after 30 years is 75%. It is given that AA0=0.75 , t=30 years. The equation…

Q: (a) Find its decay constant, k, within the exponential decay model Q(t) = Qoe-kt, i.e. k> 0 here.…

A: We need to find decay constant and the time when tritium is 25% of it's original size.

Q: Lead-210 has a half-life of 22.3 years. How much of a 102-mg sample would be remaining after 6 years

A: To solve such problem we use the following two equations K=0.693t12 N=N0e−Kt Given that T12=22.3…

Q: A wooden artifact from an ancient tomb contains 50 percent of the carbon-14 that is present in…

A:

Q: A wooden artifact from an ancient tomb contains 35 percent of the carbon-14 that is present in…

A: Radioactive decay

Q: Radioactive radium has a half-life of approximately 1599 years. What percent of a given amount…

A: A(t)=A012thh is the half lifeA(t) is the amount after t years.A0 is the initial value.

Q: A drug is administered every 8 hours in 200 mg doses. The body eliminates 10% of the drug each hour.…

A: It is given that the drug is administered in 200mg doses every 8 hours. It is also given that the…

Q: The half-life of Carbon-14 is 5770 years. Wooden carving contains 30% of the amount of Carbon-14 in…

A: Let there was x units of carbon at the starting.  30% of x=0.30x So now there is 0.30x units of…

Q: The half-life of radioactive radium (226Ra) is 1599 years. What percent of a present amount of…

A: