In the gaseous reaction I2 + Cl2 > 2ICl [ I2 ] changed from 0.400 M at the beginning of the reaction to 0.300 M after 4 min. Find the average of reaction rate by the unit mol /L. min

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

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.

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?