500毫升的百分之95的酒精加多少水配制成百分之60的酒精
95%的酒精密度约为0.8g/ml所以需要加水=0.8*500*95%/60%-0.8*500=233.3g
绛旓細鐧惧垎涔嬩節鍗佷簲閰掔簿500姣崌閰嶆垚鐧惧垎涔嬩竷鍗佷簲搴斿姞澶氬皯姘淬傝В鏋愶細500脳95%=475锛堟鍗囷級475梅75%=633鍙1/3锛堟鍗囷級633鍙1/3-500=133鍙1/3锛堟鍗囷級绛旓細搴斿姞姘133鍙1/3姣崌銆
绛旓細绾133ml. 75%娴撳害鏃剁殑鎬诲绉紝633.33ml.闇鍔犳按涓猴紝=633.33*0.25-500*0.05=133.33(ml)
绛旓細浠500姣崌95%閰掔簿閰嶆垚75%閰掔簿涓轰緥锛500ml鐨95%閰掔簿涓惈閰掔簿锛50095%=475.75%閰掔簿涓嫢鏈475鍏嬮厭绮撅紝鍏舵婚噸閲忎负47575%=633.33ml锛屾墍浠ラ渶瑕佸鍔犳按鐨勬婚噺涓猴細633.33-500=133.33ml銆鐧惧垎涔嬩節鍗佷簲鐨勯厭绮鎬庝箞鍏戞垚75 浠500姣崌95%閰掔簿閰嶆垚75%閰掔簿涓轰緥锛500ml鐨95%閰掔簿涓惈閰掔簿锛50095%=475.鍔犲叆133...
绛旓細鐧惧垎涔95鐨勯厭绮惧瘑搴︽帴杩0.8g/ml.鎵浠500姣崌鐧惧垎涔95鐨勯厭绮璐ㄩ噺涓400鍏,鍚厭绮380鍏,閰70%鐨勯厭绮惧舰鎴380/70%=543鍏嬫憾娑,鎵浠ラ渶瑕鍔犲叆143鍏嬫按
绛旓細绛旓細璁鹃渶瑕佸姞姘磝姣崌 95%*500=70%*锛500+x锛墄=95*500梅70-500 x=1250/7 x鈮178.6 鎵浠ワ細闇瑕佸姞姘1250/7姣崌
绛旓細鍒╃敤鍏紡璁＄畻姣旇緝澶嶆潅锛屽閰嶆瘮瑕佹眰绮惧害涓嶉珮鐨勫彲浠ヨ繖鏍峰厬銆95%鍜75%鐩稿樊20%锛95%閰掔簿100ml鍔犲叆20ml姘村氨鍕惧厬鎴120ml鐨75%鐨勯厭绮浜嗐傚彲鏍规嵁闇瑕佷互姝ょ被鎺ㄣ
绛旓細500姣崌闇瑕鍔犲叆133.33ml鐨钂搁姘村氨鍙互閰嶆垚75%鐨勯厭绮浜嗐備互500姣崌95%閰掔簿閰嶆垚75%閰掔簿涓轰緥锛500ml鐨95锛呴厭绮句腑鍚厭绮撅細500脳95锛咃紳475锛75%閰掔簿涓嫢鏈475鍏嬮厭绮撅紝鍏舵婚噸閲忎负475梅75锛咃紳633.33ml锛屾墍浠ラ渶瑕佸鍔犳按鐨勬婚噺涓猴細633.33锛500锛133.33ml銆傦紙钂搁姘达級...
绛旓細500ml鐨95閰掔簿鍏戞垚75鐨勬柟娉曞涓嬶細鐧惧垎涔嬩節鍗佷簲鐨勯厭绮鎬庝箞鍏戞垚75浠500姣崌95%閰掔簿閰嶆垚75%閰掔簿涓轰緥锛500ml鐨95%閰掔簿涓惈閰掔簿锛500脳95%=475.鍔犲叆133.33ml鐨钂搁姘村氨鍙互閰嶆垚75%鐨勯厭绮句簡銆傚鏋滅敤浜庝竴鑸搴殑娑堟瘨閰嶅厬銆傚ぇ姒傚厬50ml鐨勯厭绮捐澶氥傛槸浠ヤ綋绉垎鏁帮紝钂搁姘翠笉闇瑕佷笓闂ㄧ殑钂搁姘村埗鍙栨満鍗冲彲寰楀埌锛...
绛旓細鍔133姣崌姘村氨琛寏杩欑涓滆タ娌″繀瑕佺壒鍒簿纭畘浣嗘槸涓嶆槸浠讳綍75%鐨勯厭绮灏辫兘娑堟瘨鍟妦娑堟瘨鐨勫繀椤绘槸鍖荤敤閰掔簿~閰掔簿鍒嗕负璇曞墏绾с佸尰鐢ㄧ骇鍜岄鍝佺骇~浣犲繀椤讳拱鍖荤敤绾х殑~鍚﹀垯涓嶅厜娌℃湁娑堟瘨鏁堟灉鍙嶈屾湁鍙兘瀵艰嚧韬綋閲岃繘鍏ュ井閲忓寲瀛﹁瘯鍓倊杩樻槸鍘昏嵂搴楃洿鎺ヤ拱75%鐨勯厭绮惧惂~500姣崌涔熷氨浜斿叚鍧楅挶 ...
绛旓細95%*500=475ml 鐜板湪=475梅75%鈮633姣崌 鍔犳按=633-500=133姣崌
