Select the correct answer from the each drop-down menu. A reversible reaction is a reaction that takes place in the BLANK. If the reaction were to BLANK, the rate of the forward reaction would equal that of the reverse reaction.

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.

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?

Acompound has the molecular formula c3h8. which class of organic compounds does it belong to?