Calculate the concentration of h3o⁺ in a solution that contains 6.25 × 10-9 m oh⁻ at 25°c. identify the solution as acidic, basic, or neutral. a) 6.38 × 10-9 m, basic b) 1.60 × 10-6 m, acidic c) 7.94 × 10-11 m, acidic d) 7.38 × 10-3 m, basic e) 4.92× 10-5 m, acidic

When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product

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.

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy