Question

13£®ÎÒ¹úŮҩѧ¼ÒÍÀßÏßÏ·¢ÏÖÇàÝïËØ£¨ÇàÝïËصĻ¯Ñ§Ê½£ºC₁₅H₂₂O₅£©£¬ËüÊÇÒ»ÖÖÓÃÓÚÖÎÁÆű¼²µÄÒ©Î»ñ2015Äêŵ±´¶ûÉúÀíҽѧ½±£®
£¨1£©ÇàÝïËØÊÇÓÉÈýÖÖÔªËØ×é³É£»¸ÃÎïÖʵÄÒ»¸ö·Ö×ÓÖÐÓÐ42¸öÔ­×Ó£®
£¨2£©ÇàÝïËØÖÐ̼¡¢ÇâÔªËصÄÖÊÁ¿±ÈΪ90£º11£®
£¨3£©ÁÐʽ¼ÆËãÇàÝïËصÄÏà¶Ô·Ö×ÓÖÊÁ¿£®
£¨4£©ÁÐʽ¼ÆËãÇàÝïËØÖÐ̼ԪËصÄÖÊÁ¿·ÖÊý£®£¨¼ÆËã½á¹û¾«È·µ½0.1%£©
£¨5£©ÁÐʽ¼ÆËã141gÇàÝïËØÖк¬Ì¼ÔªËصÄÖÊÁ¿ÊǶàÉÙg£¿

Answer 1

·ÖÎö £¨1£©¸ù¾ÝÇàÝïËصĻ¯Ñ§Ê½C₁₅H₂₂O₅¿ÉÅжÏÔªËØ×é³É£»¸ù¾ÝÔªËØ·ûºÅÓÒϽǵÄÊý×Ö±íʾ¸Ã·Ö×ÓÖÐÔ­×ӵĸöÊý¿É¼ÆËã·Ö×ÓÖеÄÔ­×Ó¸öÊý£»
£¨2£©¸ù¾ÝÔªËصÄÖÊÁ¿±ÈµÈÓÚÏà¶ÔÔ­×ÓÖÊÁ¿ºÍÔ­×Ó¸öÊýµÄ³Ë»ýÖ®±È£»
£¨3£©ÇàÝïËصÄÏà¶Ô·Ö×ÓÖÊÁ¿=£¨Ì¼µÄÏà¶ÔÔ­×ÓÖÊÁ¿¡Á̼ԭ×Ó¸öÊý£©+£¨ÇâµÄÏà¶ÔÔ­×ÓÖÊÁ¿¡ÁÇâÔ­×Ó¸öÊý£©+£¨ÑõµÄÏà¶ÔÔ­×ÓÖÊÁ¿¡ÁÑõÔ­×Ó¸öÊý£©£»
£¨4£©ÇàÝïËØÖÐ̼ԪËصÄÖÊÁ¿·ÖÊýΪ£º$\frac{̼µÄÏà¶ÔÔ­×ÓÖÊÁ¿¡Á̼ԭ×Ó¸öÊý}{ÇàÝïËصÄÏà¶Ô·Ö×ÓÖÊÁ¿}$¡Á100%£»
£¨5£©¸ù¾Ý»¯ºÏÎïÖÐijԪËصÄÖÊÁ¿=¸Ã»¯ºÏÎïµÄÖÊÁ¿¡Á¸ÃÔªËصÄÖÊÁ¿·ÖÊý£¬½øÐзÖÎö½â´ð£®

½â´ð ½â£º£¨1£©ÓÉÇàÝïËصĻ¯Ñ§Ê½£ºC₁₅H₂₂O₅¿ÉÖª£¬ÇàÝïËØÓÉ̼¡¢Çâ¡¢ÑõÈýÖÖÔªËØ×é³É£»
¸ù¾ÝÔªËØ·ûºÅÓÒϽǵÄÊý×Ö±íʾ¸Ã·Ö×ÓÖÐÔ­×ӵĸöÊý£¬¿ÉÖªÒ»¸öÇàÝïËØ·Ö×Óº¬ÓУº15+22+5=42£»
£¨2£©ÇàÝïËØ·Ö×ÓÖÐC¡¢HÁ½ÖÖÔªËصÄÖÊÁ¿±ÈΪ£º£¨12¡Á15£©£º£¨1¡Á22£©=90£º11£»
£¨3£©ÇàÝïËصÄÏà¶Ô·Ö×ÓÖÊÁ¿=12¡Á15+22+16¡Á5=282£®
£¨4£©ÇàÝïËØC₁₅H₂₂O₅ÖÐ̼ԪËصÄÖÊÁ¿·ÖÊýΪ£º$\frac{12¡Á15}{282}$¡Á100%¡Ö63.8%£»
£¨5£©141gÇàÝïËØÖк¬Ì¼ÔªËصÄÖÊÁ¿ÊÇ141g¡Á$\frac{12¡Á15}{282}$¡Á100%=90g£®
¹Ê´ð°¸Îª£º£¨1£©Èý£»42£®
£¨2£©90£º11
£¨3£©282
£¨4£©63.8%
£¨5£©90g£®

µãÆÀ ±¾ÌâÄѶȲ»´ó£¬¿¼²éͬѧÃǽáºÏÐÂÐÅÏ¢¡¢Áé»îÔËÓÃÖÊÁ¿Êغ㶨ÂÉ¡¢»¯Ñ§Ê½µÄº¬ÒåÓëÓйؼÆËã½øÐзÖÎöÎÊÌâ¡¢½â¾öÎÊÌâµÄÄÜÁ¦£®