aliooll laleoltalhs 0.500 L of helium at 25 C is cooled to 1 C at a constant pre

Question

aliooll laleoltalhs 0.500 L of helium at 25 C is cooled to 1 C at a constant pressure. What volume does the balloon now occupy? A) 0.22 L B) 1.1 L C) 0.477 L D) 0.525 L E) 0.500L 25. A peanut butter and jelly sandwich contains 9.00 g of fat, 6.00 g of protein, and 25.0 g of carbohydrate. How many Calories does this sandwich provide? 0g A) 205 Cal B) 360 Cal C) 160 Cal D) 260 Cal E) 190 Cal 26. Which transformation is condensation? B) liquid-gas D) solidgas 27. Which pair of molecules has the strongest intermolecular interactions? A) liquid ? solid C) solid ? liquid E) gas liquid A) NH3 and CH4 B) NH3 and NH3 C) CH4 and CH4 D) 002 and C02 E)CO2 and au 28, Which is a molecular solid? B) Au C) SiO2 D) Rubber E) Water 29. Surface tension measures which of the following? A) A liquid's resistance to flow B) A liquid' s resistance to spreading out C) A liquid's ability to boil at low temperatures D) The solecular weight of a compound E) A liquid' s ability to boil at high teaperatures

Explanation / Answer

I am only entitled to answer the first question in the list. Please ask "a" specific question or mark the questions you want answers to.

24. Ideal Gas equation: PV=nRT where P is pressure, V is volume, n is number of moles, R is constant and T is temperature.

Pressure is given to be constant and n,R will remain constant so, T/V=constant

T1/V1=T2/V2

(25+273)/0.5=(11+273)/V2

V2= 0.477L

Hence the answer is C.

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