There are 3 naturally occurring isotopes of hydrogen and 2 naturally occurring isotopes of copper. True or false?

Which of these conditions most likely produces an unstable isotope?

Mercury turns to vapor at 629.88 k how much heat is lost 175 g of mercury vapor at 650 current condenses to a liquid at 297 ca mercury turns to weber at 629.88 kelvin how much he is lost 175 g of mercury vapor and 650 coming condensers to liquidate 297 kevin

What is the name of the enzyme that forms at the start of transcription?