È¡Ò»Ö§´óÊԹܣ¬¼ÓÈë20 mL±¥ºÍ³ÎÇåʯ»ÒË®(¦Ñ£½1.6 g¡¤cm£­3)£¬ÔÙ¼ÓÈë5 mL±½(¦Ñ£½0.87 g¡¤cm£­3)£¬¾²Öúó»ºÂý¼ÓÈë»Æ¶¹Á£´óСµÄÄÆ¿é(¦Ñ£½0.97 g¡¤cm£­3)£®ÏÂÁÐʵÑéÏÖÏóÖУ¬Äܹ۲쵽µÄÓÐ

¢ÙÄÆÔÚ±¥ºÍ³ÎÇåʯ»ÒË®²ã·´Ó¦²¢ËÄ´¦Óζ¯

¢ÚÓÐÆøÌå²úÉú

¢Û³ÎÇåʯ»ÒË®±ä»ë×Ç

¢ÜÄÆÔÚʯ»ÒË®Óë±½µÄ½çÃæ´¦·´Ó¦²¢ÉÏÏÂÌø¶¯

¢ÝÄÆÍ£ÁôÔÚ±½²ã²»·´Ó¦

¢ÞÄÆ¿é×îºóÏûʧ

[¡¡¡¡]

A£®

¢Ù¢Ú¢Þ

B£®

¢Ú¢Û¢Ü¢Þ

C£®

¢Ý

D£®

¢Ù¢Ú¢Û¢Þ

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º¹ð׳ºìƤÊ顤¸ßÖÐͬ²½ÏµÁС¤»îÌâÇɽâÇÉÁ·¡¤¸ßÒ»»¯Ñ§£¨ÉÏ£© ÌâÐÍ£º022

(1)È¡Ò»Ö§´óÊԹܣ¬¼ÓÈë15mLÕôÁóË®£¬ÔÙ¼ÓÈë5mL±½(¦Ñ£½0.87g¡¤cm£­3)£¬¾²Ö㬽«»Æ¶¹´óµÄ½ðÊôÄÆ(¦Ñ£½0.97g¡¤cm£­3)ÇáÇá·ÅÈëÕâ֧װÓÐË®ºÍ±½µÄÊÔ¹ÜÖУ®ÊÔÍƲâÄܹ۲쵽µÄÏÖÏóÊÇ________£®

(2)ÔÚʵÑéÊÒÀÓÐһƿ½þÔÚúÓÍÀïµÄÄƿ飮ҪȡÓýðÊôÄƽøÐÐÉÏÊöʵÑ飬ȡÓõIJÙ×÷·½·¨ÊÇ________£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

(1)È¡Ò»Ö§´óÊԹܣ¬¼ÓÈë15 mLµÄË®Óë±½(¦Ñ=0.87 g¡¤cm-3),¾²Öá£È¡»Æ¶¹´óµÄ½ðÊôÄÆ(¦Ñ=0.97 g¡¤cm-3)£¬ÇáÇá·ÅÈëÕâ֧װÓÐË®ºÍ±½µÄÊԹܣ¬ÊÔÍƲâÄܹ۲쵽µÄʵÑéÏÖÏóÊÇ____________________________________________________________________¡£

(2)ÔÚʵÑéÊÒÀÓÐһƿ½þÔÚúÓÍÀïµÄÄƿ顣ҪȡÓýðÊôÄƽøÐÐÉÏÊöʵÑ飬ȡÓõIJÙ×÷·½·¨ÊÇ____________________________________________________________________¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

£¨1£©È¡Ò»Ö§´óÊԹܣ¬¼ÓÈë15 mLµÄË®Óë±½(¦Ñ=0.88 g¡¤cm-3)£¬¾²Öá£È¡»Æ¶¹´óµÄ½ðÊôÄÆ(¦Ñ=0.97 g¡¤cm-3)£¬ÇáÇá·ÅÈëÕâ֧װÓÐË®ºÍ±½µÄÊԹܣ¬ÊÔÍƲâÄܹ۲쵽µÄʵÑéÏÖÏóÊÇ________________¡£

£¨2£©ÔÚʵÑéÊÒÀÓÐһƿ½þÔÚúÓÍÀïµÄÄƿ顣ҪȡÓýðÊôÄƽøÐÐÉÏÊöʵÑ飬ȡÓõIJÙ×÷·½·¨ÊÇ___________________________________________________________________¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

(1)È¡Ò»Ö§´óÊԹܣ¬¼ÓÈë15 mLµÄË®Óë±½(¦Ñ=0.87 g¡¤cm-3),¾²Öá£È¡»Æ¶¹´óµÄ½ðÊôÄÆ(¦Ñ=0.97 g¡¤cm-3)£¬ÇáÇá·ÅÈëÕâ֧װÓÐË®ºÍ±½µÄÊԹܣ¬ÊÔÍƲâÄܹ۲쵽µÄʵÑéÏÖÏóÊÇ____________________________________________________________________¡£

(2)ÔÚʵÑéÊÒÀÓÐһƿ½þÔÚúÓÍÀïµÄÄƿ顣ҪȡÓýðÊôÄƽøÐÐÉÏÊöʵÑ飬ȡÓõIJÙ×÷·½·¨ÊÇ____________________________________________________________________¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

(1)È¡Ò»Ö§´óÊÔ¹Ü,·Ö±ð¼ÓÈë10 mLÕôÁóË®ºÍ10 mLúÓÍ,È»ºóͶÈëÒ»»Æ¶¹Á£´óСµÄ½ðÊôÄÆ,ÊÔÍƲâÄܹ۲ìµÄʵÑéÏÖÏó£º____________________________________________________¡£

(2)ÔÚʵÑéÊÒÀï,ÓÐÒ»¿é½þÔÚúÓÍÀïµÄÄƿ顣ҪȡÓýðÊôÄƽøÐÐÉÏÊöʵÑé,È¡ÓõIJÙ×÷·½·¨ÊÇ____________________________________________________________________________¡£

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸