You are given an unknown solution of FD&C Red 40. You measure the absorbance and find it to be 0.504 at 524 nm. Determine the concentration of the unknown solution in terms of molarity.

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

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?