A solution is prepared by mixing 25 mL pentane (C3H12, d =
0.63 g/cm) with 45 mL hexane (C6H14, d = 0.66 g/cmº).
Assuming that the volumes add on mixing, calculate the mass
percent, mole fraction, molality, and molarity of the pentane.

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 are forms of frozen water? check all that apply. dew frost hail rain sleet

How is the shape of the poem “peer” connected to its meaning?