Randy has been experiencing several disturbing symptoms over the last year including: muscle weakness, slow reaction time, visual perception issues, seizures, hearing loss, weight gain, a general sense of pain, and delusions.

explain why his doctors might be concerned with the following when making their diagnosis:
neurotransmitters
hormones
myelin sheath
occipital lobe
temporal lobe
describe how each of the following brain scanning techniques would aid the doctors in making their diagnosis of these symptoms:
pet scan
fmri
eeg

Agroup of students working in a high school chemistry lab believe they have discovered a new element! how exciting! upon further testing by scientists (with better equipment), it is found that the new element contains 74 protons and 110 neutrons. 1. what is the atomic number of this element? ¬¬ 2. what is the mass number of this element? 3. is this really a new element? explain your reasoning. 4. give the name and symbol for this 5. when the students discovered it, did they find a solid, a liquid, or a gas? explain your reasoning.