Referencing the precipitate reaction 2NaOH(aq)+MgCl2(aq)→2NaCl(aq)+Mg(OH )2(s),how much 0.1MNaOH solution will completely precipitate the Mg2+ in 0.8L of 0.10MMgCl2 solution?

This is a mixture that has the same composition throughout.

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

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.