Cho m gam hỗn hợp gồm Fe2O3 và Zn tác dụng đủ với V lít dd HCl 0,5M thu được 1,12 lít khí (đktc). Cô cạn dung dịch thu được 16,55 gam muối khan. Tính V, m?

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.