Help please manganese atom has 30 neutrons and atomic number 25
determine the electron cloud charge of manganese

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

What is the lowest number energy level where a d sublevel is found

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