# Basic Engineering2. Materials Science

Boron is used to dope 1 kg of germanium (Ge). How much boron (B) is required to establish a charge carrier density of 3.091e7/cm^3. One mole of germanium has a volume of 13.57 cm^3 and weighs 72.61 gram. Give answer in grams of boron?

I have no idea how to solve this problem. I need help lol.

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asked by Ray
1. Oh never mind I figured it out.

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posted by Ray

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