Agas with an empirical formula c2h2o has a molecular weight of 120.6g/mol. a possible molecular formula for the gas is a) ch2o b) c2h2o c) c3h6o1.5 d) c6h6o3 e) c4h4o2

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

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 is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.