Concentration HCl -- 0.35 M Volume HCl -- 24.35 mL Volume NaOH -- 36.44 mL The data above refers to a titration of NaOH with a known concentration of HCl. Calculate the moles of HCl at the end point.

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.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.