Chemistry... What is the molarity of a solution prepared by dissolving 30.0 g NaCl in enough water to make a 0.300 L solution?

A:1.71 M NaCl

B:0.154 M NaCl

C:1.82 M NaCl

D:0.833 M NaCl

How manyatoms of mercury are in 1.4214e+1 ml sample

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.

What type of reaction fuels the processes seen here?