close
Blogtrottr
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決 
Take the Style Quiz

Join JustFab and get one pair of extraordinary shoes or bag every month, handpicked for you by our fashion experts.
From our sponsors
重量百分濃度
Sep 23rd 2013, 14:47

觀念：重量百分濃度 = 溶質公克數 / 溶液公克數 x 100%

Q. 濃度百分之十的鹽水一百公克，
溶質(鹽)公克數 = 10
溶液(鹽水)公克數 = 100

1.加入五克的鹽，求新的濃度?
溶質公克數 = 10+5 =15
溶液公克數 = 100+5 =105
所以 重量百分濃度 = 15 / 105 x 100% = 14.29%

2. 加入二十克的水，求新的濃度是多少?
溶質公克數 = 10 (不變)
溶液公克數 = 100+20 =120
所以 重量百分濃度 = 10 / 120 x 100% = 8.33%

3. 與濃度百分之二十的鹽水五十克混合，求新的濃度是多少?
先算濃度百分之二十的鹽水五十克含有
溶質公克數 = 50 x 20% =10
溶液公克數 = 50
兩種溶液混合後
總溶質公克數 = 10+10 =20
總溶液公克數 = 100+50 =150
所以 重量百分濃度 = 20 / 150 x 100% = 13.33%

This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers. Five Filters recommends:

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
arrow
arrow
    全站熱搜
    創作者介紹
    創作者 xxxmkks 的頭像
    xxxmkks

    線上遊戲排行榜2013/2014,進擊的巨人線上看,candy crush saga外掛,正妹寫真三圍

    xxxmkks 發表在 痞客邦 留言(0) 人氣()

    E-mail轉寄