139. Solving a chemistry problem
Seller: Derkach
Price: 1.18 USD
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Product description
Find the total surface of 1 kg of spherical particles of coal if the average particle diameter is 7 * 10 ^ -2 mm, and the density of coal is 1.8 * 10 ^ 3 kg / m.
Additional information
If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.