Potassium sulfide reacts with cobalt(II) nitrate in an aqueous solution. Write a balanced equation for this double displacement reaction. Calculate the mass of the solid product produced from 175 mL of a 0.225 M potassium sulfide combined with 250. mL of 0.180 M cobalt (II) nitrate. Help with showing me how to work it out. Please.

What’s the scientific notation for the number 6,840,000,000

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

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.