
كيمياء حراريه 3
Authored by mawad mohamed
Chemistry
9th Grade
Used 22+ times

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16 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
عينتان من غازي B , A متساويتان في الكتلة و عدد الجزيئات تم
حفظهما تحت نفس الظروف من الضغط ودرجة الحرارة فإن العينتان .................
يكون لهما نفس الحجم والكتلة المولية
يكون لهما حجم مختلف
ونفس الكتلة المولية
يكون لهما حجم مختلف
وكتلة مولية مختلفة
يكون لهما نفس الحجم
وكتلة مولية مختلفة
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
مثـــــال : احسب قيمة ( H ) للتفاعل :
CH4 + 2O2 → CO2 + 2H2O
علما بان طاقة الروابط للتفاعل هي كالآتي :
C - H = 413 K.J C = O = 745 K.J
O - H = 467 K.J O =O = 498 K.J
-710 K.J
-170kj
-107kj
-701kj
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
احسب كمية الحرارة اللازمة لرفع 500g من الإيثانول من C ْ 20.2 إلى C ْ 44.1 علما بأن حرارته النوعية C ْ 2.42 J/ g. .
28919 J
81999j
29981j
89921j
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ايهما اكبر فى المحتوى الحرارى
H2O (g)
H2O (l)
H2O (s)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
يكون التفاعل ماص للحراره اذا كانت
ΔΗ=−
q=-
q=+
q=ΔΗ
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
كمية الحرارة اللازمة لرفع درجة حرارة 1000 g من الماء درجة واحدة مئوية = cal …... .
1000
4180
4218
10000
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
يكون النظام.........عندما لا يحدث انتقال أى من الطاقة والمادة بين النظام والوسط المحيط.
مفتوحا
معزول
مغلق
مختلط
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