Asolution of ammonia and water contains 3.80×1025 water molecules and 8.60×1024 ammonia molecules. how many total hydrogen atoms are in this solution?

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

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 many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate