A Bottle roll test was conducted on 1 kg of a soil sample at 50% solids. 50 g of the tailings was digested with aqua-regia and topped to 10 ml. The data obtained after atomic absorption...

Extracted text: A Bottle roll test was conducted on 1 kg of a soil sample at 50% solids. 50 g of the tailings was digested with aqua-regia and topped to 10 ml. The data obtained after atomic absorption spectrophotometry is presented in the table below. Use this information to answer questions 5 to 8. 2 4 8 16 24 Tailing Time (h) Au (mg/L) 0.02 0.08 0.42 1.10 1.32 0.03 a. determine the head grade b. determine the total gold in 1kg ore. c. determine the percentage recovery for each period and plot a graph on a graph sheet