Question

ij¿ÎÍâÐËȤС×é¶ÔʵÑéÊÒÖеÄһƿϡÁòËáÑùÆ·½øÐзÖÎö£®ËûÃÇ·Ö±ðÓÃ100gÏ¡ÁòËáÓ벻ͬÖÊÁ¿µÄпÁ££¨º¬ÔÓÖÊ£¬ÔÓÖʲ»ÓëÏ¡ÁòËá·´Ó¦£©·´Ó¦£¬Èý´ÎʵÑéµÄÊý¾ÝÈçÏÂ±í£®

ʵÑé´ÎÊý	1	2	3
¼ÓÈëпÁ£µÄÖÊÁ¿£¨g£©	4	8	12
³ä·Ö·´Ó¦ºóÊ£ÓàÎïÖʵÄ×ÜÖÊÁ¿£¨g£©	103.9	107.8	111.8

Çë»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©µÚ______´ÎʵÑ飬пÁ£ÓëÏ¡ÁòËáÇ¡ºÃÍêÈ«·´Ó¦£®
£¨2£©¼ÆËãÏ¡ÁòËáµÄÖÊÁ¿·ÖÊý£¨Ð´³ö¼ÆËã¹ý³Ì£©£®

Answer 1

£¨1£©ÀûÓÃÖÊÁ¿Êغ㶨ÂÉ£¬¿ÉÒÔ·¢ÏÖÿ¼ÓÈë4gпÁ£ÑùÆ·¾Í¿É·Å³ö0.1gÇâÆø£¬¿ÉµÚ2´ÎºÍµÚ3´Î·Å³öÇâÆøµÄÖÊÁ¿¾ùΪ0.2g£¬¿ÉÅжϵÚ2´ÎпÁ£ÓëÏ¡ÁòËáÇ¡ºÃÍêÈ«·´Ó¦£»
¹Ê´ð°¸Îª£º2£»
£¨2£©ÓÃÇ¡ºÃÍêÈ«·´Ó¦µÄµÚ2´ÎʵÑéÊý¾Ý½øÐмÆË㣮8¿ËпÁ£ÍêÈ«·´Ó¦Éú³ÉÇâÆøµÄÖÊÁ¿ÊÇ100g+8g-107.8g=0.2g
ÉèÉú³É0.2gÇâÆøÐèH₂SO₄µÄÖÊÁ¿Îªx
Zn+H₂SO₄=ZnSO₄+H₂¡ü£¨1·Ö£©
    98         2
     x         0.2g

98

x

=

2

0.2g

    x=9.8g
¸ÃÏ¡ÁòËáµÄÖÊÁ¿·ÖÊý=

9.8g

100g

¡Á100%=9.8%
´ð£ºÏ¡ÁòËáµÄÖÊÁ¿·ÖÊýΪ9.8%£®