An aluminum can weighing 10 g absorbs 106.8 J of heat and warms by 12°C. What is the specific heat of the aluminum can?

100mg magnesium reacts with 20ml of 1.0m hcl

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.

How many grams of mgbr2 are needed to produce 75g or metal?