131. Задачка по химии №013 193727

9. The mass absorption coefficient of Ni, measured from the Cu Ka line, is 49.2 cm2/g. Calculate the thickness of a nickel foil that was found to transmit 35.2% of the incident power of a Cu K beam. The density of Ni is 8.90 g/cm3.
Answer. 2.38*10-3 cm

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