Cobalt-uranyl Acetate

Dissolve with warming, 40 g of uranyl acetate in a mixture of30 ml acetic acid and 470 ml water.Similarly, prepare a solution containing 200 g of cobaltous acetate in a mixture of 30 ml acetic acid and 470 ml water. Mix the two solutions while still warm, cool to room temperature to separate xs salts from the solution and filter.