A solution of a substance was spotted at a distance 0.5cm from the base of a 20cm long chromatographic plate.Upon elution,the solvent front got to a place 0.5cm from the top of the plate.If the component moves half way up the 20cm plate,calculate its Retention factor value.(When I solved it,i got 0.05).

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A 6.07 g sample of nutrients substances burned in a bomb calorimeter containing 2.00 x 10^2 g h2o.what is the fuel value (in nutrient Cal) per gram of sample if the temperature of the water increase 5.70c
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