The density of ethanol is 0.78 g/mL if you have a 5.0 ML sample what is the mass of ethanol

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Which changes of state do the labels represent? a: b: c:

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?