Fifty grams (50.0) of hot water at a temperature of 65.0 c is mixed with 40.0 grams of Cold water, the final temperature of the mixture is 45.0'c. how much heat energy did the hot water lose?

V1t2 = v2t1 is an expression of who’s law

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.

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?