calculate the concentration

A dual-wavelength spectrometer uses 780 nm and 830 nm. The molar extinction coefficients for oxy-hemoglobin (HbO₂) and deoxy-hemoglobin (Hb) at these two wavelengths are: e_HbO₂_780nm = 710 cm^-1M^-1, e_Hb_780nm = 1075 cm^-1M^-1, e_HbO₂_830nm = 974 cm^-1M^-1, e_Hb_830nm = 693 cm^-1M^-1. The spectrometer measures absorption coefficients at these two wavelengths are: m_a_780nm = 0.057 cm^-1, m_a_830nm = 0.063 cm^-1, please calculate the concentration for HbO₂ and Hb (in unit of mM), as well as total hemoglobin concentration, and oxygen saturation.

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