Question

How many.moles.of gas are contained in 1000 mL at 10 °C and a pressure of 350 mm Hg? 3. a) 0.010 mol b) 0.060 mol c) 0.020 mol d) 4.26 x 10 mol What is the molecular weight of a gas that exerts a pressure of 1671.4 mm of Hg at 27 °C and 4. has a density of 1.25 g/mL? a) 20.1 g/mol b) 14.0 g/mol c) 39.9 g/mol d) 65.2 g/mol 4ca o 32 wgm 5. What is the identity of the gas in question 4? a) Neon gas b) Argon gas c) Nitrogen gas d) Xenon gas U 02.b se e na be

Answer 1

Given, V = loooml= |L LT=10°C= 283:15 | P = 350 mmHg = 350 = 0.46 ath. 1760 7. By ibаl gад га", гv = hвт PV = nRT es n= 0.46x1 =0.020 mel 0:0821 x 283.15 So, congret option is, @ 0.020 meil Too Given, P=1671.4 mm Hg = 16.11:4 = 219 atin ------- L T-27°CE 27272.15 = 300:15 K id = 1.25gmk CaRTEPMOM = (25X0.0821 X 300.15 ci 2119 - Ima - 14.00/moll so, correct option is, 0 14.07.mel. --> * © Nitrogen gas as its at mic nor is 7 & ate mic wt. 14;