ÌâÄ¿ÄÚÈÝ
ijʵÑéС×éÀûÓÃÈçͼËùʾÒÇÆ÷½øÐС°ÅäÖÆÖÊÁ¿·ÖÊýÒ»¶¨µÄÂÈ»¯ÄÆÈÜÒº¡±µÄʵÑ飺
£¨1£©Í¼1ÖÐÒÇÆ÷aµÄÃû³ÆÊÇ
£¨2£©°´ÊµÑéÒªÇó£¬Í¼1Öл¹È±ÉٵIJ£Á§ÒÇÆ÷ÊÇ£¨ÌîÃû³Æ£©
£¨3£©Íê³É´ËʵÑéÕýÈ·µÄ²Ù×÷˳ÐòÊÇ£¨ÌîÐòºÅ£©
¢ÙÈܽ⡡¢Ú°ÑÅäºÃµÄÈÜҺװÈëÊÔ¼ÁÆ¿ ¢Û³ÆÁ¿¡¡¢Ü¼ÆËã
£¨4£©Ð¡Ù»°´Í¼2µÄ²Ù×÷³ÆÈ¡ÂÈ»¯ÄÆ£¬Ð¡Ãñ·¢ÏÖСٻµÄ²Ù×÷ÓдíÎó£®ÄãÈÏΪСٻ²Ù×÷ÖеĴíÎóÊÇ
£¨5£©Ð¡ÃñËùÈ¡ÕôÁóË®µÄÌå»ýÈçͼ3Ëùʾ£¬Ôò¸ÃʵÑéԼƻ®ÅäÖƵÄÂÈ»¯ÄÆÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ£¨Ë®µÄÃܶÈԼΪ1g/cm3£©
£¨1£©Í¼1ÖÐÒÇÆ÷aµÄÃû³ÆÊÇ
ÉÕ±
ÉÕ±
£¨2£©°´ÊµÑéÒªÇó£¬Í¼1Öл¹È±ÉٵIJ£Á§ÒÇÆ÷ÊÇ£¨ÌîÃû³Æ£©
²£Á§°ô
²£Á§°ô
£»£¨3£©Íê³É´ËʵÑéÕýÈ·µÄ²Ù×÷˳ÐòÊÇ£¨ÌîÐòºÅ£©
¢Ü¢Û¢Ù¢Ú
¢Ü¢Û¢Ù¢Ú
¢ÙÈܽ⡡¢Ú°ÑÅäºÃµÄÈÜҺװÈëÊÔ¼ÁÆ¿ ¢Û³ÆÁ¿¡¡¢Ü¼ÆËã
£¨4£©Ð¡Ù»°´Í¼2µÄ²Ù×÷³ÆÈ¡ÂÈ»¯ÄÆ£¬Ð¡Ãñ·¢ÏÖСٻµÄ²Ù×÷ÓдíÎó£®ÄãÈÏΪСٻ²Ù×÷ÖеĴíÎóÊÇ
Ò©Æ·ºÍíÀÂëµÄλÖ÷ŷ´ÁË
Ò©Æ·ºÍíÀÂëµÄλÖ÷ŷ´ÁË
£»Ëý³ÆÈ¡µÄÂÈ»¯ÄÆʵ¼ÊÖÊÁ¿Îª12g
12g
£»£¨5£©Ð¡ÃñËùÈ¡ÕôÁóË®µÄÌå»ýÈçͼ3Ëùʾ£¬Ôò¸ÃʵÑéԼƻ®ÅäÖƵÄÂÈ»¯ÄÆÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ£¨Ë®µÄÃܶÈԼΪ1g/cm3£©
18%
18%
£®·ÖÎö£º£¨1£©¸ù¾ÝʵÑéÊÒ³£ÓÃÒÇÆ÷µÄÃû³ÆÓëÓÃ;Ìî¿Õ£»
£¨2£©ÏÈÓÉͼʾÅжϸò½ÊÇʲô²Ù×÷£¬ÔÙÓɲÙ×÷ÅжÏËùÓÃÒÇÆ÷£¬×îºóÈ·¶¨ËùȱÒÇÆ÷£»
£¨3£©ÒÀ¾ÝÅäÖÆÈÜÒºµÄ²½Ö裺¼ÆËã¡¢³ÆÁ¿¡¢Èܽ⡢װƿ£¬¶ÔÕÕÑ¡Ïî½øÐнâ´ð£»
£¨4£©Ê¹ÓÃÍÐÅÌÌìƽ³ÆÁ¿ÎïƷʱ£¬Òª¡°×óÎïÓÒÂ롱£¬ÕýÈ·³ÆÁ¿Ê±£º¡°ÎïÆ·ÖÊÁ¿=íÀÂëÖÊÁ¿+ÓÎÂëÖÊÁ¿¡±µÃ³öÎïÂë·Å·´µÄ¼ÆË㹫ʽ£¬½ø¶øµÃ³öʵ¼ÊÖÊÁ¿£»
£¨5£©ÓÉͼʾÖÐËùʾÊý¾Ý¼ÆËãÿС¸ñËù±íʾµÄÖÊÁ¿£¬½ø¶øµÃ³öÕýÈ·½á¹û£¬ÓÉÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼ÆË㹫ʽÇó³öËùÐè½á¹û£®
£¨2£©ÏÈÓÉͼʾÅжϸò½ÊÇʲô²Ù×÷£¬ÔÙÓɲÙ×÷ÅжÏËùÓÃÒÇÆ÷£¬×îºóÈ·¶¨ËùȱÒÇÆ÷£»
£¨3£©ÒÀ¾ÝÅäÖÆÈÜÒºµÄ²½Ö裺¼ÆËã¡¢³ÆÁ¿¡¢Èܽ⡢װƿ£¬¶ÔÕÕÑ¡Ïî½øÐнâ´ð£»
£¨4£©Ê¹ÓÃÍÐÅÌÌìƽ³ÆÁ¿ÎïƷʱ£¬Òª¡°×óÎïÓÒÂ롱£¬ÕýÈ·³ÆÁ¿Ê±£º¡°ÎïÆ·ÖÊÁ¿=íÀÂëÖÊÁ¿+ÓÎÂëÖÊÁ¿¡±µÃ³öÎïÂë·Å·´µÄ¼ÆË㹫ʽ£¬½ø¶øµÃ³öʵ¼ÊÖÊÁ¿£»
£¨5£©ÓÉͼʾÖÐËùʾÊý¾Ý¼ÆËãÿС¸ñËù±íʾµÄÖÊÁ¿£¬½ø¶øµÃ³öÕýÈ·½á¹û£¬ÓÉÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼ÆË㹫ʽÇó³öËùÐè½á¹û£®
½â´ð£º½â£º£¨1£©Í¼1ÖÐÒÇÆ÷aµÄÃû³ÆÊÇÉÕ±£®¹ÊÌÉÕ±£»
£¨2£©¸Ãͼ±íʾÅäÖÆÈÜҺȫ¹ý³ÌÐèÓõÄËùÓÃÒÇÆ÷£¬³ÆÁ¿ÂÈ»¯ÄƹÌÌåÐèÒªÍÐÅÌÌìƽ¡¢Á¿È¡Ë®µÄÌå»ýÐèÒªÁ¿Í²£¬Èܽâʱ»¹»áÓõ½ÉÕ±ºÍ²£Á§°ô£¬¹ÊÌ²£Á§°ô£»
£¨3£©ÅäÖÆÈÜÒºµÄ²½ÖèΪ£º¼ÆËã¡¢³ÆÁ¿¡¢Èܽ⡢װƿ´æ·Å£®¹ÊÌ¢Ü¢Û¢Ù¢Ú£»
£¨4£©ÓÉͼʾ¿ÉÒÔ¿´³öÍÐÅÌÌìƽµÄʹÓôíÎó£¬ÎïÂë·Å·´ÁË£¬ËùÒÔ£¬Ò©Æ·Êµ¼ÊÖÊÁ¿=íÀÂëÖÊÁ¿-ÓÎÂëÖÊÁ¿=15g-3g=12g£®
¹ÊÌҩƷºÍíÀÂëµÄλÖ÷ŷ´ÁË£»12g£»
£¨5£©ÓÉͼʾÖÐËùʾÊý¾Ý¿ÉµÃ£¬Ã¿Ð¡¸ñËù±íʾµÄÖÊÁ¿Îª1mL£¬Ë®µÄÌå»ýΪ82mL£¬ÔÙÓÉË®µÄÃܶÈ1g/mL£¬Óɹ«Ê½m=¦ÑVµÃ³öË®µÄÖÊÁ¿Îª£º82mL¡Á1g/mL=82g£¬ÓÉÍÐÅÌÌìƽÖÐíÀÂëÓëÓÎÂëµÄÖÊÁ¿¿ÉÖª£¬¸ÃʵÑéÓû³ÆÒ©Æ·ÖÊÁ¿Îª£º10g+5g+3g=18g£¬ÈÜÒºÖÊÁ¿Îª£º82g+18g=100g£¬ÓÉÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼ÆË㹫ʽµÃÈÜÖÊÖÊÁ¿·ÖÊýΪ£º
¡Á100%=18%£¬
¹ÊÌ18%£®
£¨2£©¸Ãͼ±íʾÅäÖÆÈÜҺȫ¹ý³ÌÐèÓõÄËùÓÃÒÇÆ÷£¬³ÆÁ¿ÂÈ»¯ÄƹÌÌåÐèÒªÍÐÅÌÌìƽ¡¢Á¿È¡Ë®µÄÌå»ýÐèÒªÁ¿Í²£¬Èܽâʱ»¹»áÓõ½ÉÕ±ºÍ²£Á§°ô£¬¹ÊÌ²£Á§°ô£»
£¨3£©ÅäÖÆÈÜÒºµÄ²½ÖèΪ£º¼ÆËã¡¢³ÆÁ¿¡¢Èܽ⡢װƿ´æ·Å£®¹ÊÌ¢Ü¢Û¢Ù¢Ú£»
£¨4£©ÓÉͼʾ¿ÉÒÔ¿´³öÍÐÅÌÌìƽµÄʹÓôíÎó£¬ÎïÂë·Å·´ÁË£¬ËùÒÔ£¬Ò©Æ·Êµ¼ÊÖÊÁ¿=íÀÂëÖÊÁ¿-ÓÎÂëÖÊÁ¿=15g-3g=12g£®
¹ÊÌҩƷºÍíÀÂëµÄλÖ÷ŷ´ÁË£»12g£»
£¨5£©ÓÉͼʾÖÐËùʾÊý¾Ý¿ÉµÃ£¬Ã¿Ð¡¸ñËù±íʾµÄÖÊÁ¿Îª1mL£¬Ë®µÄÌå»ýΪ82mL£¬ÔÙÓÉË®µÄÃܶÈ1g/mL£¬Óɹ«Ê½m=¦ÑVµÃ³öË®µÄÖÊÁ¿Îª£º82mL¡Á1g/mL=82g£¬ÓÉÍÐÅÌÌìƽÖÐíÀÂëÓëÓÎÂëµÄÖÊÁ¿¿ÉÖª£¬¸ÃʵÑéÓû³ÆÒ©Æ·ÖÊÁ¿Îª£º10g+5g+3g=18g£¬ÈÜÒºÖÊÁ¿Îª£º82g+18g=100g£¬ÓÉÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼ÆË㹫ʽµÃÈÜÖÊÖÊÁ¿·ÖÊýΪ£º
18g |
100g |
¹ÊÌ18%£®
µãÆÀ£º¸ÃÌâÒÔÈÜÒºÅäÖÆΪÔØÌ壬¿¼²éÁËÒÇÆ÷µÄÃû³ÆÓëÓÃ;¡¢²Ù×÷µÄ²½Öè¡¢´íÎó»ò²»¹æ·¶²Ù×÷ÒýÆðµÄÈÜÖÊÖÊÁ¿±ä»¯¡¢Á¿Í²µÄ¶ÁÊý¡¢ÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼ÆËãµÈÎÊÌ⣬½â´ðʱҪ¿´Çåͼʾ£¬½áºÏ¾ßÌå֪ʶµã½øÐнâ´ð£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿