Question

15£®¸ÖÌú¹¤ÒµÊÇÒ»¸ö¹ú¼ÒµÄÖ§Öù²úÒµÖ®Ò»£¬Ä³Í¬Ñ§²É¼¯ÁËһЩÉúÌúÑùÆ·£¨º¬ÔÓÖÊ£¬ÔÓÖʲ»ÈÜÓÚË®£¬²»ÓëÏ¡ÁòËá·´Ó¦£©²ÉÓÃÈçͼ1ËùʾװÖýøÐзÖÎö£® ·Ö±ð³ÆµÃ׶ÐÎÆ¿ÓëÃÞ»¨µÄÖÊÁ¿Îª44.1g£¬ÉúÌúÑùÆ·µÄÖÊÁ¿Îª9.0g£®ÔÚ׶ÐÎÆ¿ÖмÓÈë×ãÁ¿Ï¡ÁòËáºó£¬Á¢¼´¿ªÊ¼¼Ç¼µç×ÓÌìƽµÄʾÊý£¬¼Ç¼Êý¾ÝÈçͼ2£®ÇëÈÏÕæ·ÖÎöÊý¾Ý£¬»Ø´ðÏÂÁÐÎÊÌ⣺

£¨1£©Ð¡¾üÊý¾Ý´¦ÀíµÄͼÏóÖУ¬ÕýÈ·µÄÊÇͼ3ÖеÄB

£¨2£©¼ÆËãÑùÆ·ÖÐÌúµÄÖÊÁ¿·ÖÊý£¨¾«È·µ½0.1%£©£»
£¨3£©¼ÆËã·´Ó¦ºóËùµÃÈÜÒºÖÐÁòËáÑÇÌúµÄÖÊÁ¿·ÖÊý£®

Answer 1

·ÖÎö ÌúºÍÏ¡ÁòËá·´Ó¦Éú³ÉÁòËáÑÇÌúºÍÇâÆø£¬¸ù¾Ý·´Ó¦µÄ»¯Ñ§·½³Ìʽ¼°ÆäÌṩµÄÊý¾Ý¿ÉÒÔ½øÐÐÏà¹Ø·½ÃæµÄ¼ÆËãºÍÅжϣ®

½â´ð ½â£º£¨1£©ÓÉͼ2¿ÉÖª£¬Éú³ÉÇâÆøÖÊÁ¿Îª£º159.0g-158.7g=0.3g£¬Òò´ËС¾üÊý¾Ý´¦ÀíµÄͼÏóÖУ¬ÕýÈ·µÄÊÇͼ3ÖеÄB£¬A¡¢CÖ®ËùÒÔ²»ÕýÈ·£¬ÊÇÒòΪÑùÆ·ÖÊÁ¿²»ÄܼõСµ½0£¬Ëæ×Å·´Ó¦½øÐУ¬ÈÜÒºÖÊÁ¿Ôö´ó£®
¹ÊÌB£®
£¨2£©ÉèÌúÖÊÁ¿Îªx£¬Éú³ÉÁòËáÑÇÌúÖÊÁ¿Îªy£¬
Fe+H₂SO₄=FeSO₄+H₂¡ü£¬
56              152      2
x                 y      0.3g
$\frac{56}{x}$=$\frac{152}{y}$=$\frac{2}{0.3g}$£¬
x=8.4g£¬y=22.8g£¬
ÑùÆ·ÖÐÌúµÄÖÊÁ¿·ÖÊýΪ£º$\frac{8.4g}{9.0g}$¡Á100%=93.3%£¬
´ð£ºÑùÆ·ÖÐÌúµÄÖÊÁ¿·ÖÊýΪ93.3%£®
£¨3£©·´Ó¦ºóËùµÃÈÜÒºÖÊÁ¿Îª£º£¨159.0g-44.1g-9.0g£©+8.4g-0.3g=114g£¬
·´Ó¦ºóËùµÃÈÜÒºÖÐÁòËáÑÇÌúµÄÖÊÁ¿·ÖÊýΪ£º$\frac{22.8g}{114g}$¡Á100%=20%£¬
´ð£º·´Ó¦ºóËùµÃÈÜÒºÖÐÁòËáÑÇÌúµÄÖÊÁ¿·ÖÊýΪ20%£®

µãÆÀ ±¾ÌâÖ÷Òª¿¼²éѧÉúÔËÓüÙÉè·¨ºÍ»¯Ñ§·½³Ìʽ½øÐмÆËãºÍÍƶϵÄÄÜÁ¦£¬¼ÆËãʱҪעÒâ¹æ·¶ÐÔºÍ׼ȷÐÔ£®