Two blocks of metal are separated and have different temperatures as shown. The blcoks are then pushed together so they touch.
Which statement describes how heat flows?
Block 1
Block 2
Block 1
Block 2
60°C
25°C
A. Heat flows drom block 1 to block 2
B. Heat flows from block 2 to block 1
C. There is no heat flow
D. Heat flows back and forth from one block to another

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 -