Which instrument, along with a telescope, allows study of the wavelengths of visible light coming from a star? a. a shortwave radio set b. a nuclear reactor c. a solar flare d. a spectrograph

I think it could be d but I don’t know

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -