A particular radioactive isotope has a decay rate of -0.173% where time is measured in years. A scientist started with 1,490 milligrams of this material. Use the Continuous Decay Formula: F=Pert to find how much of the material will exist in 640 years? milligrams Round answer to the nearest tenth of a mg.

What is the Formula that will convert a Continuous rate (r) into a Halving factor (H)?



What is the Half Life of this radioactive isotope?

years Round answer to the nearest whole number.

i not know

step-by-step explanation:

any options?

step-by-step explanation:

hi there!

the answer will be d: 2

answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

step-by-step explanation: