Exercise 9: Black holes are suspected when a visible star is being noticeably pulled by an
invisible partner that is more than 3 times as massive as the sun. a) If a red
giant (a dying star) is gravitationally accelerated at 0.075 m/s2 toward an
object that is 9.4 x 1010 m away, how large a mass must the unseen body
possess? b) How many times more massive is the object than the sun?
(Mg = 1.99 % 1030 kg)
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KITAM

Yes she is correct. the answer is completely correct

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 -

Um i think answer is a