Scientists discovered that stars i. n the universe are mostly composed of which elements?

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

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.