Which of the following pairs of reactants is likely to produce a pure metal when the
reactants react together?
a na3po4(aq) + mg(no3)2(aq) →
b al(s) + cucl2(aq) →
c mg(s) + o2(g) →
d cl2(aq) + ki(aq) →

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree

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.

Ab c or d ? i’m not sure what the answer is