Infer why does metallic bonding happen

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

Label a-f based on the table using c for concentrated and d for dilute

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.