If the half-life of an isotope is 50 years, calculate the percent of original radioactive atoms that remain radioactive after 200 years. A
none

B
50%

C
12.5%

D
6.25%

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Free answer. the treaty of versailles ended world war i, but some of the terms of the treaty contributed to the beginning of world war ii. which was one of the terms of the treaty? the answer would be "germany was forces to pay reparations to the allied countries.". i hope this .

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?