The radioactive isotope tritium decays with a first-order rate constant k of 0.056 year-1. what fraction of the tritium initially in a sample is still present 30 years later?

Agas in a balloon at constant pressure has a volume of 160 ml at -125*c. what is its volume at 29.0*c?

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg