Which statements are part of the safety protocol for this lab experiment? Check all that apply
Wear a lab coat and safety goggles when performing an experiment.
Always measure chemical quantities twice before adding to solution.
Use caution when connecting electric circuits.
Do not drop the magnets.
Do not use electrical currents.
Do not bring bar magnets near magnetic devices.
Always disconnect circuits when not in use.

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Which of the following is true about the speed of light? it depends on the wavelength.