Read More
Date: 24-4-2019
855
Date: 24-1-2017
898
Date: 10-5-2019
1725
|
Homogeneous mixtures
Homogeneous mixtures (solutions) can be separated into their component substances by physical processes that rely on differences in some physical property, such as differences in their boiling points. Two of these separation methods are distillation and crystallization. Distillation makes use of differences in volatility, a measure of how easily a substance is converted to a gas at a given temperature. A simple distillation apparatus for separating a mixture of substances, at least one of which is a liquid. The most volatile component boils first and is condensed back to a liquid in the water-cooled condenser, from which it flows into the receiving flask. If a solution of salt and water is distilled, for example, the more volatile component, pure water, collects in the receiving flask, while the salt remains in the distillation flask.
Figure 1.1 : The Distillation of a Solution of Table Salt in Water. The solution of salt in water is heated in the distilling flask until it boils. The resulting vapor is enriched in the more volatile component (water), which condenses to a liquid in the cold condenser and is then collected in the receiving flask.
|
|
الآثار الجانبية لأدوية تستخدم في علاج "ألزهايمر" تثير الجدل
|
|
|
|
|
اكتشاف سر نجاة "مخلوقات أبدية" من انفجارات الإشعاع القاتلة
|
|
|
|
للمشاركة بحفل التخرج المركزي الرابع بدأ توافد طلبة الجامعات العراقية إلى العتبة العباسية
|
|
رئيس هيأة التربية والتعليم يستقبل الطلبة المشاركين في حفل التخرّج المركزي
|
|
في مستشفى الكفيل.. نجاح زراعة كلية لمريض يعاني عجزًا فيها
|
|
قسم المعارف يصدر تحديثًا جديدًا لتطبيقه الإلكتروني
|