1. A teacher instructs her students to measure out 50.0 mL of hydrogen peroxide for three trials of an experiment. A student measures out 37.2 ml, 38.7 mL, and 36.9 mL. Use this information to answer the questions below (1a and 1b). 1a

Calculate the percent error for each measurement and include them below. (For example: 1%, 2%, 3%)

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.