Question

ton I. (30pts total /opts per question) All questions must show appropriate work and equations to get credit for com nswerIncorrectly answered questions will receive partial credit based on work. Be sure to read all questions completely 1.1 (opt). Determine the molar mass of Freon Il gas if a sample weighing 0.597 goccupies 100. cmat 95°C, and Answer: 1.2 (opts). Calculate the wavelength of an electron that has been ejected from a metal plate with a velocity of 108 m/s by a 215 mm photon.

Answer 1

lol According to ideal gas law we have — PV = nRT er proge page-1 Hene, P-pressure of gas Ve volume " " n= moles " T= Absolute temperature of gas R = universal gas comtant Given, P= 1000 mm Hg V= 100 cm3 = 100 L = OL 1000 →na T= 95 °C = (95+273) K = 368 K :, 1000 mm Hg * 0.1 L = nx 62.364 L mmHg moī' x' x 368 K 1000 mm Hg xolk - = 4.357 X163 mot 62.364 X mmHg mo'ta x 368 W So, 4.357 x10-3 mol = 0.597 g is 1 mol = 0.597x1 4,357x103 . ... Molar mass of Freon -11 gas is 137.01 g/mol 0.597x1_ 137.01 g

1.2 According to de Broglie formula, wavelength of au electron is - (page 2) mu whene, ) = toavelength h - planck's constant m= man of electron V = velocity of electron Given, v= 108 m/s - m= 91810 31 kg h = 6.626 X1634 J.S 6.626X1634 JS 191 10 31 kg x 48 108 m/s - 6.74x106m| CANSLER) /