9701_s07_qp_4.pdf | PapaCambridge
The figure below shows their absorption spectra. 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 absorbance 300 400 500 wavelength / nm ... in a test tube produces a mixture of two gases A and B. No residue remains in the tube. The mass spectrum of gas A contains peaks at m/e (mass number) values of 16, 17 ................
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