Calculate the hydraulic diameter for each of the following conduit cross sectional areas. a. a semicircle of diameter d with the top closed, b. a semicircle of diameter d with the top open. c. a closed square of sides a. d. an annulus with internal diameter di and external diameter d2.

This element exists in adundance in the sun. explain how you would go about capturing sunlight. would this captured sunlight contain any of the element?

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.