A5.0-gram sample of fe(s) is to be placed in 100. milliliters of hcl(aq). which changes will result in the fastest rate of reaction?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

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.

Which element is least likely to undergo a chemical reaction