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Chemistry Lab1,2,3,4,5 .pdf
تلخيص الكيمياء جميع المحاضرات فقط المهم منها
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بالنسبه للكيمياء النه A8
جابت بس سؤال واحد درجتين حراره
t1=55
t2=45
وتريد ال b.p
تطبيق مباشر
55+45=100
اتقسمهن على 2
تطلع درجه الحراره 50
بس 🙂
جابت بس سؤال واحد درجتين حراره
t1=55
t2=45
وتريد ال b.p
تطبيق مباشر
55+45=100
اتقسمهن على 2
تطلع درجه الحراره 50
بس 🙂
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الاسئله لي اجت في الامتحان تجربه منصهر صوديوم
سؤال الاول ماهو لون كااشف لي يظهر اثناء كشف عن كبريت مع كتابه معادله
وسؤال ثااني لماذا لايجب لمس عنصر صوديوم
واني نااسيه اكتبه بالاسئله لي نشرته انتبهو طلعو من ملزمه
سؤال الاول ماهو لون كااشف لي يظهر اثناء كشف عن كبريت مع كتابه معادله
وسؤال ثااني لماذا لايجب لمس عنصر صوديوم
واني نااسيه اكتبه بالاسئله لي نشرته انتبهو طلعو من ملزمه
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At 1 atm pressure, the boiling point of water is
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15%
0 °C
21%
None of the mentioned
61%
100 °C
3%
_100 °C
Forwarded from Pharmacy students
Forwarded from Pharmacy students
Forwarded from Pharmacy students
ملاحظه انتبهو سلسله لي عدد ذرات كاربون اكثر درجه غليانه تكون اكثر Propanol has B.p more than butanol
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44%
T
56%
F
Forwarded from Pharmacy students
هذا سؤال مذكور في ملزمه لكن بصوره غير مباشره اضافه ملح يزيد من درجه غليان Addition of salt in the water
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19%
Raise the M.p
11%
Lower the B.p
70%
Raise the B.p
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Temperature boiling point in Compound pure
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24%
increase
51%
decrease
7%
median
18%
Zero
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Un branched molecules have more surface area when be boiling point
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66%
increase
19%
decrease
7%
equals
8%
غير ذلك
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The tool that use in extraction is called
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8%
Buchner funnel
74%
separator funnel
18%
filter paper
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Salting out process is lead to increasing in the polarity of solution that result the decreasing .in the solubility a non-polar compound
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75%
T
25%
F
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Should have the solvent that use inthe extraction process _______ boiling point😌
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65%
Low
23%
hign
8%
Medium
4%
Zero
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Should have the solvent that use in the extraction process a low boiling point :because
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80%
Removal undesirable impurities
12%
Solvent More dense
9%
Solvent less dense
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Combound soluble in the ether, water
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35%
Sodium chloride
11%
Sodium hydroxide
35%
Hydroxybenzaldehyde
20%
Diethyl ether