Coal containing 21% ash is completely combusted, and the ash is 100% removed in a water contact scrubber. If 10,000 kg of coal is burned per hour with a scrubber flow rate of 1.0 m/min, the weight percentage of the ash in the water/ash stream leaving the scrubber is most nearly: A B. C. D. 3.4 14.3 25.9 67.7 Coal containing 21% ash is completely combusted, and the ash is 100% removed in a water contact scrubber. If 10,000 kg of coal is burned per hour with a scrubber flow rate of 1.0 m/min, the weight percentage of the ash in the water/ash stream leaving the scrubber is most nearly: A B. C. D. 3.4 14.3 25.9 67.7