Question

2£®£¨1£©ÔÚ¡°ÓÃÓÍĤ·¨¹À²â·Ö×ӵĴóС¡±µÄʵÑéÖУ¬ÏòÈÝÁ¿Æ¿ÖмÓÈë0.5mLµÄÓÍËáºÍÒ»¶¨Á¿µÄ¾Æ¾«µÃµ½500mLµÄ»ìºÏÈÜÒº£¬È»ºóÓõιÜÎüÈ¡ÕâÖÖÈÜÒº£¬ÏòСÁ¿Í²ÖеÎÈë200µÎ»ìºÏÈÜÒº£¬ÒºÃæÕýºÃ´ïµ½Á¿Í²ÖÐ2mLµÄ¿Ì¶È£¬ÔÙÓõιÜÈ¡ÅäºÃµÄÓÍËáÈÜÒº£¬ÏòÈöÓÐðò×Ó·ÛµÄʢˮdzÅÌÖеÎÏÂ1µÎÈÜÒº£¬ÔÚÒºÃæÉÏÐγÉÓÍËᱡĤ£¬´ýÓÍĤÎȶ¨ºó£¬·ÅÔÚ´øÓÐÕý·½ÐÎ×ø±ê¸ñµÄ²£Á§°åϹ۲ìÓÍĤ£¬ÈçͼËùʾ£®×ø±ê¸ñÕý·½ÐεĴóСΪ2cm¡Á2cm£¬ÓÉͼ¿ÉÒÔ¹ÀËã³öÓÍĤµÄÃæ»ýÊÇ$2¡Á1{0}_{\;}^{-2}$m²£¨±£ÁôһλÓÐЧÊý×Ö£©£¬Óɴ˹ÀËã³öÓÍĤ·Ö×ÓµÄÖ±¾¶ÊÇ$5¡Á1{0}_{\;}^{-10}$m£¨±£Áôһλ
ÓÐЧÊý×Ö£©£®
£¨2£©Ä³Í¬Ñ§ÔÚ¡°ÓÃÓÍĤ·¨¹À²â·Ö×ӵĴóС¡±µÄʵÑéÖУ¬¼ÆËã³öµÄ·Ö×ÓÖ±¾¶Ã÷ÏÔÆ«´ó£¬¿ÉÄÜ
ÊÇÓÉÓÚAC£®
A£®ÓÍËá·Ö×ÓδÍêÈ«É¢¿ª
B£®ÓÍËáÖк¬ÓдóÁ¿¾Æ¾«
C£®¼ÆËãÓÍĤÃæ»ýʱ£¬ÉáÈ¥ÁËËùÓв»×ã°ë¸ñµÄ·½¸ñ
D£®ÇóÿµÎÓÍËá¾Æ¾«ÈÜÒºµÄÌå»ýʱ£¬2mLµÄÈÜÒºµÎÊý198´í¼Æ³ÉÁË200£®

Answer 1

·ÖÎö £¨1£©ÓÉͼʾÓÍĤÇó³öÓÍĤµÄÃæ»ý£¬¸ù¾ÝÌâÒâÇó³öÁ½µÎÓÍËáÈÜÒºº¬´¿Ó͵ÄÌå»ý£¬È»ºóÇó³öÓÍĤµÄºñ¶È£¬¼´ÓÍËá·Ö×ÓµÄÖ±¾¶
£¨2£©ÓÃÓÍĤ·¨¹À²â·Ö×ÓÖ±¾¶ÊµÑéÔ­ÀíÊÇ£ºÈÃÒ»¶¨Ìå»ýµÄ´¿ÓÍËáµÎÔÚË®ÃæÉÏÐγɵ¥·Ö×ÓÓÍĤ£¬¹ÀËã³öÓÍĤÃæ»ý£¬´Ó¶øÇó³ö·Ö×ÓÖ±¾¶£®¸ù¾Ý´ËÔ­Àí·ÖÎöÎó²î£®

½â´ð ½â£º£¨1£©¾ÝÌâÒâ·½¸ñ¸öÊýΪn=50£¬ÓÍĤµÄÃæ»ýÊÇΪ£º
$S=50¡Á2cm¡Á2cm=200c{m}_{\;}^{2}=2¡Á1{0}_{\;}^{-2}{m}_{\;}^{2}$
Ò»µÎÓÍËá¾Æ¾«ÈÜÒºº¬´¿ÓÍËáΪ£º$V=\frac{2mL}{200}¡Á\frac{0.5}{500}=1{0}_{\;}^{-11}{m}_{\;}^{3}$
ÓÍËá·Ö×ÓµÄÖ±¾¶Îª£º$d=\frac{V}{S}=\frac{1{0}_{\;}^{-11}}{2¡Á1{0}_{\;}^{-2}}=5¡Á1{0}_{\;}^{-10}m$
£¨2£©¼ÆËãÓÍËá·Ö×ÓÖ±¾¶µÄ¹«Ê½ÊÇ$d=\frac{V}{S}$£¬VÊÇ´¿ÓÍËáµÄÌå»ý£¬SÊÇÓÍĤµÄÃæ»ý£®
A£®ÓÍËáδÍêÈ«É¢¿ª£¬SƫС£¬¹ÊµÃµ½µÄ·Ö×ÓÖ±¾¶d½«Æ«´ó£¬¹ÊAÕýÈ·£»
B£®¼ÆËãʱÀûÓõÄÊÇ´¿ÓÍËáµÄÌå»ý£¬Èç¹ûº¬ÓдóÁ¿µÄ¾Æ¾«£¬ÔòÓÍËáµÄʵ¼ÊÌå»ýƫС£¬ÔòÖ±¾¶½«Æ«Ð¡£¬¹ÊB´íÎó£»
C£®¼ÆËãÓÍĤÃæ»ýʱÉáÈ¥ÁËËùÓв»×ãÒ»¸ñµÄ·½¸ñ£¬S½«Æ«Ð¡£¬¹ÊµÃµ½µÄ·Ö×ÓÖ±¾¶½«Æ«´ó£¬¹ÊCÕýÈ·£»
D£®ÇóÿµÎÌå»ýʱ£¬lmLµÄÈÜÒºµÄµÎÊýÎó¶à¼ÇÁË2µÎ£¬ÓÉ${V}_{0}^{\;}=\frac{V}{n}$¿ÉÖª£¬´¿ÓÍËáµÄÌå»ý½«Æ«Ð¡£¬Ôò¼ÆËãµÃµ½µÄ·Ö×ÓÖ±¾¶½«Æ«Ð¡£¬¹ÊD´íÎó£»
¹ÊÑ¡£ºAC£®
¹Ê´ð°¸Îª£º£¨1£©$2¡Á1{0}_{\;}^{-2}$£¬$5¡Á1{0}_{\;}^{-10}$£»£¨2£©AC

µãÆÀ ¼ÆËãÓÍĤÃæ»ýʱ£¬Òª×¢Ò⣬²»µ½Ò»¸ö¸ñµ«³¬¹ý°ë¸ö¸ñµÄËãÒ»¸ö¸ñ£¬²»µ½°ë¸ö¸ñµÄºöÂÔ²»¼Æ