Of those twelve, only methyl bromide and neopentyl bromide could not possibly be derived by the addition of HBr--Markovnikov or non-Markovnikov--to an alkene of the appropriate structure. 1  For each of the other ten alkyl bromides, determine: 2  which ones could be formed by the Markovnikov addition of HBr to an alkene.
Electroconvulsive therapy (ECT) is a treatment for certain mental illnesses. During this therapy, electrical currents are sent through the brain to induce a seizure. The procedure has been shown to help 78 percent of people with clinical depression.
An electrocardiogram technician performs an ECG by attaching electrodes to a patient and then pulling switches on an ECG machine to trace electrical impulses transmitted by the heart. A doctor then inspects these readings to analyze the patient's heart condition. ECG technicians also might perform stress tests.