ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿Ä³ÓÃÓÚ²»Ðâ¸Ö×ŲÊÉ«µÄËáÏ´¼ÁÊÇÏ¡ÑÎËáºÍÏ¡ÁòËáµÄ»ìºÏÎΪ²â¶¨¸ÃËáÏ´¼ÁÖÐÁòËáµÄÖÊÁ¿·ÖÊý,È¡30.0gÑùÆ·,ƽ¾ù·Ö³ÉÈýµÈ·Ý,·Ö±ð¼ÓÈ벻ͬÖÊÁ¿µÄÏõËá±µÈÜÒº,³ä·Ö·´Ó¦ºó²â¶¨Éú³É³ÁµíµÄÖÊÁ¿,Êý¾Ý¼Ç¼Èçϱí:

񅧏

1

2

3

ÑùÆ·ÖÊÁ¿/g

10.0

10.0

10.0

ÏõËá±µÈÜÒºÖÊÁ¿/g

5.0

10.0

15.0

³ÁµíÖÊÁ¿/g

1.165

2.330

2.330

£¨1£©Èý´ÎʵÑéÖÐ,Ç¡ºÃÍêÈ«·´Ó¦µÄʵÑé±àºÅΪ ¡£

£¨2£©¼ÆËã¸ÃËáÏ´¼ÁÖÐÁòËáµÄÖÊÁ¿·ÖÊý¡££¨Ð´³ö¼ÆËã¹ý³Ì£©

£¨3£©Èç¹û½«Èý´ÎʵÑéµÄ·ÏÒº»ìºÏ,³ä·Ö·´Ó¦ºó¹ýÂË£¬ËùµÃÂËÒºµÄÈÜÖÊÊÇʲôÎïÖÊ¡£

¡¾´ð°¸¡¿2£»9.8%£»HNO3ºÍHCl

¡¾½âÎö¡¿

£¨1£©ÊµÑé1¼ÓÈë5.0gÏõËá±µÈÜÒºÉú³É1.165g³Áµí£¬ÊµÑé2¼ÓÈë10.0gÏõËá±µÈÜÒºÉú³É2.330g³Áµí£¬ÊµÑé3¼ÓÈë15.0gÏõËá±µÈÜÒºÉú³É2.33g³Áµí£¬ËµÃ÷ʵÑé3Öжà¼ÓÈëµÄ5gÏõËá±µÈÜҺûÓвμӷ´Ó¦£¬ÔòÈý´ÎʵÑéÖУ¬Ç¡ºÃÍêÈ«·´Ó¦µÄÊÇʵÑé2£¬¹ÊÌî2¡£

£¨2£©½â£ºÉè²Î¼Ó·´Ó¦µÄÁòËáµÄÖÊÁ¿Îªx

98£º233=x£º2.330g

x=0.980g

¸ÃËáÏ´¼ÁÖÐÁòËáµÄÖÊÁ¿·ÖÊý=¡Á100%=9.8%

´ð£º¸ÃËáÏ´¼ÁÖÐÁòËáµÄÖÊÁ¿·ÖÊýΪ9.8%¡£

£¨3£©ÓÉ£¨1£©¿ÉÖª£¬ÊµÑé1ÖÐÁòËáÓÐÊ£Ó࣬ÔòÈÜÒºÊÇÑÎËá¡¢ÁòËáºÍÏõËáµÄ»ìºÏÈÜÒº£¬ÊµÑé2 Ç¡ºÃÍêÈ«·´Ó¦£¬ÈÜÒºÊÇÑÎËáÓëÏõËáµÄ»ìºÏÈÜÒº£¬ÊµÑé3ÖÐÏõËá±µÓÐÊ£Ó࣬ÈÜÒºÊÇÑÎËá¡¢ÏõËáºÍÏõËá±µµÄ»ìºÏÈÜÒº£¬Èç¹û½«Èý´ÎʵÑéµÄ·ÏÒº»ìºÏÔÚÒ»Æð£¬ÔòʵÑé3Öжà³öµÄ5gÏõËá±µÈÜҺǡºÃÄÜÓëʵÑé1ÖÐÊ£ÓàµÄÁòËáÍêÈ«·´Ó¦Éú³ÉÁòËá±µ³ÁµíºÍÏõËᣬËùÒÔ»ìºÏºóµÄÈÜÒºÊÇÑÎËáÓëÏõËáµÄ»ìºÏÈÜÒº£¬ÆäÖеÄÈÜÖÊÊÇHNO3ºÍHCl£¬¹ÊÌîHNO3ºÍHCl¡£

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

¡¾ÌâÄ¿¡¿»¯Ñ§Ð¡×éÈ¡ÐÎ×´ºÍ´óС¾ùÏàͬµÄþƬ£¬Ð¿Æ¬£¬ÂÁƬ¡¢ÌúƬ£¬·Ö±ðÓë5%µÄÏ¡ÁòËá·´Ó¦£¬²âµÃ·´Ó¦ËÙ¶ÈÓÉ´óµ½Ð¡µÄ˳ÐòÊÇ£ºÃ¾>п>Ìú>ÂÁ¡£ÎªÊ²Ã´ÊµÑé½á¹ûÓë½ðÊô»î¶¯ÐÔ˳Ðò²»ÍêÈ«Ò»ÖÂÄØ£¿Ð¡×éͬѧ²ÂÏë¿ÉÄܵÄÔ­Òò£¬Éè¼ÆÁËÈçÏÂ̽¾¿ÊµÑé¡£(˵Ã÷£ºÊµÑéÖÐËùÓÃËáµÄÌå»ýÏàµÈÇÒ×ãÁ¿)

ʵÑéÐòºÅ

²Ù×÷

·´Ó¦ËÙ¶È

¢ñ

È¡ÐÎ×´ºÍ´óС¾ùÔÈÏàͬµÄþƬ¡¢ÂÁƬ¡¢ÌúƬ¡¢Ð¿Æ¬£¬________¡£·ÅÈëÊÔ¹ÜÖУ¬·Ö±ðͬʱ¼ÓÈë

5%µÄÏ¡ÁòËá

þ£¾Ð¿£¾Ìú£¾ÂÁ

¢ò

10%µÄÏ¡ÁòËá

þ£¾Ð¿£¾Ìú£¾ÂÁ

¢ó

5%µÄÏ¡ÑÎËá

þ£¾ÂÁ£¾Ð¿£¾Ìú

¢ô

10%µÄÏ¡ÑÎËá

þ£¾ÂÁ£¾Ð¿£¾Ìú

(1)ÉÏÊöʵÑéÖкáÏß´¦µÄ²Ù×÷ÊÇ__________¡£Éè¼ÆʵÑé¢ñ¡¢¢òµÄÄ¿µÄÊÇ____________________¡£

(2)¶Ô±ÈʵÑé_____(ÌîÐòºÅ)£¬³õ²½ÅжÏÂÁÓëËá·´Ó¦µÄËÙ¶ÈÔÚÅÅÐòÖгöÏֱ仯µÄÔ­Òò¿ÉÄÜÓë_____Óйأ¬Ä³Í¬Ñ§ÏòÂÁÓ벻ͬŨ¶ÈÏ¡ÁòËá·´Ó¦µÄÊÔ¹ÜÖмÓÈëµÈÁ¿ÂÈ»¯ÄƹÌÌ壬·¢ÏÖ·´Ó¦ËٶȾùÃ÷ÏÔ±ä¿ì£¬´Ó΢¹Û½Ç¶È·ÖÎö£¬Ô­ÒòÊÇ_______________¡£

(3)ʵÑéºó£¬Í¬Ñ§ÃÇ»æÖÆÁ˱¾´Î̽¾¿ÊµÑéÖÐÂÁÓëÏ¡ÑÎËá·´Ó¦µÄÏÂÁÐͼÏó£¬ÆäÖÐÕýÈ·µÄÊÇ_____(Ìî×ÖĸÐòºÅ)£¬ÅжÏÒÀ¾ÝΪ____________________¡£

A B C

¡¾ÌâÄ¿¡¿ÖÇʤ¡°Ð¹ڲ¡¶¾¡±£¬»¯Ñ§ÐС£

£¨1£©ÈÏʶ¡°Ð¹ڲ¡¶¾¡±¡£

¿Æѧ¼ÒÓÃÒ»ÖÖÁ×Ô­×Ó±ê¼Ç²¡¶¾µÄ RNA ÈÃÆä½þȾϸ°û£¬´Ó¶ø»ñµÃйڲ¡¶¾¸ÐȾÈËÌåϸ°ûµÄ¹ý³Ì¡£ÒÑÖª Ò»ÖÖ̼ԭ×Ó£¨C£­12£©µÄÖÊÁ¿Îª ng£¬¸ÃÁ×Ô­×ÓµÄÖÊÁ¿Îª mg£¬Ôò¸ÃÁ×Ô­×ÓµÄÏà¶ÔÔ­×ÓÖÊÁ¿¿É±íʾΪ______________£»

£¨2£©ÖÎÁÆ¡°Ð¹ڲ¡¶¾¡±¡£

¡¶ÐÂÐ͹Ú×´²¡¶¾·ÎÑ×ÕïÁÆ·½°¸£¨ÊÔÐеÚÆ߰棩¡·Ìáµ½£¬ÓÐÌõ¼þ¿É²ÉÓÃÇâÑõ»ìºÏÎüÈËÆø£¨ÇâÆø/ ÑõÆø£º 66.6%/33.3%£© ÖÎÁÆ¡£ÆäÖУ¬ÇâÆøÃܶÈС£¬¸½´øÒ©ÎïÈÝÒ×ÎüÈ˺ôÎüµÀ£»ÑõÆøµÄ×÷ÓÃÊÇÓëÆÏÌÑÌÇ·´Ó¦£¬»¯Ñ§·½³ÌʽΪ___________£»

£¨3£©Ô¤·À¡°Ð¹ڲ¡¶¾¡±¡£

¢Ù²úÉú¿¹Ìå¡£¿¹ÌåÓɵ°°×ÖÊ×é³É£¬ÄÜÓÐЧ°ïÖúÉíÌåµÖÓù¼²²¡¡£´ÓʳÎïÖÐÉãÈ˵ĵ°°×ÖÊÔÚÌåÄÚÖð²½·Ö½â³É¿É±»Ð¡³¦ÎüÊÕµÄС·Ö×Ó»¯ºÏÎï_____________£¬È»ºóÐγÉÕë¶Ôйڲ¡¶¾µÄ¿¹Ìå¡£

¢ÚÒ½ÁÆ·À»¤¡£Ò»´ÎÐÔÒ½ÓÿÚÕÖÒ»°ãÓÉÈÛÅç²¼¡¢Î޷IJ¼£¨Ö÷ÒªÔ­ÁϾùΪºÏ³É²ÄÁϾ۱ûÏ©£©£¬µãȼºó²úÉú _____________ÆøζµÄΪÃÞÉ´¿ÚÕÖ£¬·´Ö®ÎªÒ»ÐÔ¿ÚÕÖ¡£

¢ÛÈÕ³£Ïû¶¾¡£0.5%µÄ¹ýÑõÒÒËáÈÜÒºÊÇÒ»ÖÖ¸ßЧÏû¶¾¼Á¡£Í¼5ΪѧУ¹ºÖõÄÒ©¼Á²¿·Ö±êÇ©¡£Ò½ÎñÊÒÓÃËüÅäÖÆ0.5%µÄ¹ýÑõÒÒËáÈÜÒº£¬Ôò¹ºÖõĹýÑõÒÒËáÈÜÒºÒ©¼ÁÓë×ÔÀ´Ë®µÄÅäÖÆÖÊÁ¿±ÈΪ___________¡£

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø