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[求助]
文獻中的問題。。 已有1人參與
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某文獻中一段話語:‘ Thirty-two grams of soybean cake were mixed with 250 ml of tap water containing 0.25N HCl. The mixture was autoclaved at 14 ◦C for 25 min. After cooling, pH of the mixture was adjusted to 7.0 with 1N NaOH solution and the suspension was filtered. The filtrate was diluted to 1600 ml’ ,這短話中,0.25N HCL, 到底多大的量???優(yōu)點不解 |
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