مسسساعده في الكيميآآآ :(

[love me for me]

السسسلآآم عليكوم ^_^

كيفكووؤوم يآآرب تمآآم

المهيم .. انا عندي كم سؤال ف الكيمستري

الاجابات الصحيحه حتكون باللون الاحمر

نبدأ بسسم الله .. من اسئله الدكتوره اكرام دانش chapter 5

A small bubble rises from the bottom of a lake, where the temperature and pressure are 4°C and 3.0 atm, to the water's surface, where the temperature is 25°C and the pressure is 0.95 atm. Calculate the final volume of the bubble if its initial volume was 2.1 mL.


A. 0.72 mL
B. 6.2 mL
C. 41.4 mL >> انا طلعلي دآ الجواب
D. 22.4 mL
E. 7.1 mL

Determine the molar mass of chloroform gas if a sample weighing 0.389 g is collected in a flask with a volume of 102 cm3 at 97°C. The pressure of the chloroform is 728 mmHg.


A. 187 g/mol
B. 121 g/mol
C. 112 g/mol
D. 31.6 g/mol
E. 8.28 ´ 10-3 g/mol
انا ما انا مالاقيت دا الشي chloroform في الجدول الدوري :( :(

وكمان
What is the molar mass of Freon-11 gas if its density is 6.13 g/L at STP?


A. 0.274 g/mol
B. 3.64 g/mol
C. 78.2 g/mol
D. 137 g/mol
E. 365 g/mol
و كمان دا الشيFreon-11 مالاقيتو

A mixture of three gases has a total pressure of 1,380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol CO2, 3.04 mol CO, and 1.50 mol Ar. What is the partial pressure of Ar?


A. 0.258 atm
B. 301 mmHg
C. 356 mmHg
D. 5,345 mmHg
E. 8,020 mmHg


ااما دا السؤال مو فاهمتو

A sample of hydrogen gas was collected over water at 21°C and 685 mmHg. The volume of the container was 7.80 L. Calculate the mass of H2(g) collected. (Vapor pressure of water = 18.6 mmHg at 21°C.)


A. 0.283 g
B. 0.572 g
C. 0.589 g
D. 7.14 g
E. 435 g

ججححتى داآ السؤال مو فاهمتو


وبسووبسسس وسوري طولت ^_^