An analyst weighed 9.8512g of a sample, later he took a porcelain capsule at constant weight, which was 114.6132g. After having the capsule with the sample in the oven for 6 hours, the weight of the capsule was 116.2426g. Subsequently 8.5612 were dried and finally calcined, the constant weight of the crucible was 109.3123 and the weight of the crucible after calcination was 109.3634g. What is the% humidity of the sample? And what is the% of ash on a wet and dry basis?

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Units and Dimensions

Dimensions are the basic concepts of the measurement of quantities. Units are the means of expressing the dimensions. For instance, an area has a dimension of L2 and a unit of m2.