If the activity of a sample of 232Th decreases from 1000 cpm to 500 cpm in 60 min, in another 60 min its activity will be O O cpm.
500 cpm.
O 125 cpm.
0 250 cpm.

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1