ÌâÄ¿ÄÚÈÝ
3£®ÒÑ֪ijÓлúÎïAÖÐÖ»º¬ÓÐ̼¡¢ÇâÁ½ÖÖÔªËØ£¬½«AÑõÆøÖÃÓÚÍêÈ«·â±ÕµÄÈÝÆ÷ÖÐÒýȼ£¬³ä·Ö·´Ó¦ºó£¬Ö»Éú³É¶þÑõ»¯Ì¼ºÍË®£®ÊµÑé²âµÃ·´Ó¦Ç°ºóÎïÖÊÈç±íËùʾ£º| ÎïÖÊ | A | O2 | CO2 | H2O |
| ·´Ó¦Ç°ÖÊÁ¿£¨g£© | 16 | a | 0 | 0 |
| ·´Ó¦ºóÖÊÁ¿£¨g£© | 0 | 0 | 44 | 36 |
£¨2£©ÓлúÎïAµÄ»¯Ñ§Ê½ÎªCH4£¬ÆäÖÐÇâÔªËØµÄÖÊÁ¿·ÖÊýΪ25%£®
£¨3£©Ð´³ö¸Ã·´Ó¦µÄ»¯Ñ§·½³Ìʽ£ºCH4+2O2$\frac{\underline{\;µãȼ\;}}{\;}$CO2+2H2O£®
·ÖÎö ¸ù¾ÝÖÊÁ¿Êغ㶨ÂÉ£¬ÔÚ»¯Ñ§·´Ó¦ÖУ¬²Î¼Ó·´Ó¦Ç°¸÷ÎïÖʵÄÖÊÁ¿×ܺ͵ÈÓÚ·´Ó¦ºóÉú³É¸÷ÎïÖʵÄÖÊÁ¿×ܺͣ®ÔÚ»¯Ñ§·´Ó¦ÖУ¬·´Ó¦Ç°ºóÔ×ÓµÄÖÖÀàûÓиı䣬ÊýĿûÓÐÔö¼õ£¬Ô×ÓµÄÖÊÁ¿Ò²Ã»Óиı䣮
½â´ð ½â£º£¨1£©¸ù¾ÝÖÊÁ¿Êغ㶨ÂÉ£¬ÔÚ»¯Ñ§·´Ó¦ÖУ¬²Î¼Ó·´Ó¦Ç°¸÷ÎïÖʵÄÖÊÁ¿×ܺ͵ÈÓÚ·´Ó¦ºóÉú³É¸÷ÎïÖʵÄÖÊÁ¿×ܺͣ®ËùÒÔÓÐ16+a=44+36£¬¹Êa=64£»Éú³ÉÎïCO2ÖÐÌ¼ÔªËØµÄÖÊÁ¿¼´ÓлúÎïÖÐÌ¼ÔªËØµÄÖÊÁ¿£¬¹ÊÓлúÎïÖÐÌ¼ÔªËØµÄÖÊÁ¿Îª£º44¿Ë¡Á$\frac{12}{12+16¡Á2}$¡Á100%=12¿Ë£®
£¨2£©ÓлúÎïAµÄ»¯Ñ§Ê½ÎªCH4£¬ÆäÖÐÇâÔªËØµÄÖÊÁ¿·ÖÊýΪ$\frac{4¡Á1}{4¡Á1+12}¡Á100%=25%$£»
£¨3£©·´Ó¦µÄ»¯Ñ§·½³ÌʽΪ£ºCH4+2O2$\frac{\underline{\;µãȼ\;}}{\;}$CO2+2H2O£»
¹Ê´ð°¸£º64£»12£»CH4£»25%£»CH4+2O2$\frac{\underline{\;µãȼ\;}}{\;}$CO2+2H2O£®
µãÆÀ ±¾ÌâÖ÷Òª¿¼²éѧÉúÔËÓÃÖÊÁ¿Êغ㶨ÂɽøÐÐÍÆ¶ÏµÄÄÜÁ¦£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
13£®ÏÂÁÐÏÖÏóºÍ×ö·¨£¬½öÉæ¼°ÎïÀí±ä»¯µÄÊÇ£¨¡¡¡¡£©
| A£® | ÌúÖý³É¹ø | B£® | ÆÏÌÑÄð³É¾Æ | C£® | ¹âºÏ×÷Óà | D£® | ȼ·ÅÑÌ»¨ |
15£®»¯Ñ§Ê¹ÎÒÃÇѧ»áÁË´Ó΢¹ÛµÄ½Ç¶ÈÈÏʶºê¹ÛÏÖÏó£¬ÏÂÁжԺê¹ÛÏÖÏó½âÊÍ´íÎóµÄÊÇ£¨¡¡¡¡£©
| A£® | ¾Æ¾«»Ó·¢--·Ö×ÓµÄÌå»ý±ä´ó | |
| B£® | Îŵ½Ô¶´¦»¨Ïã--·Ö×ÓÔÚ²»¶ÏµØÔ˶¯ | |
| C£® | Ë®±äΪˮÕôÆøÌå»ý±ä´ó--·Ö×Ó¼ä¼ä¸ôÔö´ó | |
| D£® | Ñõ»¯¹¯ÊÜÈÈ·Ö½â--·Ö×ÓÔÚ»¯Ñ§±ä»¯ÖпÉÒÔÔÙ·Ö |
20£®ÏÂÁйØÓÚ×ÊÔ´¡¢ÄÜÔ´µÄÐðÊöÕýÈ·µÄÊÇ£¨¡¡¡¡£©
| A£® | »ØÊÕÀûÓ÷ϾɽðÊô£¬Ëä²»ÄܼõÉÙ¶Ô»·¾³µÄÎÛȾ£¬È´¿ÉÒÔ½ÚÔ¼½ðÊô×ÊÔ´ | |
| B£® | ĿǰÈËÀàÖÆµÃµÄ´¿½ðÊôÖ»ÓÐ80ÓàÖÖ£¬ºÏ½ðÈ´¸ß´ï¼¸Ç§ÖÖ | |
| C£® | ÎÒ¹ú¿óÎï´¢Á¿±È½Ï·á¸»£¬ÆäÖÐÎÙ¡¢îÑ¡¢ÎýµÈ´¢Á¿¾ÓÊÀ½çǰÁÐ | |
| D£® | ½ðÊô×ÊÔ´Ö»Óнð¡¢ÒøÒÔµ¥ÖʵÄÐÎʽ´æÔÚ£¬ÆäÓà¶¼ÒÔ»¯ºÏÎïÐÎʽ´æÔÚ |