100毫升的溶液要稀释成5%—10%的液体需要加多少水啊? 1L水,pac浓度10% 液体, 加60ppmPAC应该是多...
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绛旓細绋閲婃垚5%鐨勮瘽瑕佸姞1900姣崌姘寸█閲婃垚10% 锛岃鍔900姣崌姘
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绛旓細鏍规嵁绋閲婂墠鍚庣殑婧惰川鐩哥瓑,灏卞彲浠ヤ簡 璁,鍙互鍚戞憾娑蹭腑鍔爔g鐨勬按 100*10%=锛100+x)*5 1000=500+5x 5x=500 x=100 鍙互鍚戞憾娑蹭腑鍔100g鐨勬按,7,鏍规嵁婧舵恫绋閲鍓嶅悗婧惰川鐨勮川閲忎笉鍙橈紝鍒楀紡锛氳锛氳浣100鍏10%鐨勬隘鍖栭捑婧舵恫鍙樻垚5%鐨勬隘鍖栭捑婧舵恫锛岄渶鍔犳按x 100g*10%=(100g+x)*5 x=100g 鎵浠ヨ浣100鍏...
绛旓細36%鐨勬祿鐩愰吀閰鎴5%鐨绋鐩愰吀100ml闇瑕13.889ml娴撶洂閰革紝86.111ml姘淬100脳5%=x脳36 瑙e緱x=13.889锛堟鍗囷級100-13.889=86.111锛堟鍗囷級
绛旓細3:2婧舵恫1000姣崌锛屾憾娑插叡4+3+2=9浠斤紝鍗1000姣崌婧舵恫10%姘寲閽犲崰4/9锛5%纰抽吀姘㈤挔鍗3/9锛5%钁¤悇绯栧崰2/9锛屽悇婧舵恫鍒嗗埆闇瑕444.44姣崌銆333.33姣崌銆222.22姣崌銆5%钁¤悇绯栨憾娑蹭笌鐢熺悊鐩愭按涓鏍凤紝鏄熀鏈緭娑插埗鍓傘傛瘡100姣崌涓惈钁¤悇绯5鍏嬨傚叾娴撳害涓庤娴嗘笚閫忓帇鐩哥瓑銆傝櫧鐒朵笌鐢熺悊鐩愭按娓楅忓帇鐩稿悓锛屼絾鍦...