Predict how many H1 NMR signals (individual resonances, not counting splitting) are expected for the compound. an alkene, where one alkene carbon is bonded to two methyl groups and the other alkene carbon is bonded to two protons. How many H1 NMR signals are expected

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.

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?

What is the percentage of hydrogen in nitrogen trihydride