Suppose 1 g stearic acid is added to 5 g of lauric acid. predict the temperature at which this mixture will begin to melt, and justify your answer.

The mixture will begin to melt at 43.2°C

Explanation:

In a mixture, given that no new substance is created the melting point will be the same of the substances mixed. Also it doesn't depend of the amount of each substance (althought it may be difficult to see if the one with the lower melting temperature is in a small quantity).

So we have:

The mixture will begin to melt at 43.2°C

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