Wavelengths of the three longest standing waves
Determine the wavelengths of the three longest standing waves which can be made on a 6.22 m long string fixed at both ends.
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Quinines, a chemical used in the dye industry and in photography, are an organic compound containing only H, C and O. Determine the empirical formula of the compound of 0.105g of the compound gives 0.0350g of H2O and 0.257g of CO2 when burned
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