Question

3. A 4.37-g sample of a certain diatomic gas occupies a volume of 3.00 L at 1.00 atm and a temperature of 45°C. Identify this gas. a. O2 b. F2 d. H2 e. N2 c. Cl2 4. When 7.0 g of helium and 14.0 g of argon were mixed in a flask the total pressure in the flask was found to be 712 atm. What is the partial pressure of helium in atm? a. 56 b. 593 c. 833 d. 1070 e. 1420 5. Which of the following gases will have the slowest rate of effusion? b. He a. H2 d. Ne c. N2 e. CO2 ale with yolume and

Answer 1

molk Answer3 Gwen cas constant (R) = 0.0821 Latin weight of sample (W) = 4.37g Volume (V) = 3.00L Pressure CP) = 1.00 atm Temperature (T) = 45°C -45+273 = 318k According to Ideal gas equ PV = nRT WxRxT Smoles (n) = molar mass (M) M = WxRxT M. 4.379) *0.0821ck.ata molik) x31866) 1.0 Catin) x 3.000K) M= 38.030 Homet Molar mess of fa is 38 g/mol - answer is bl so ... correct I {note: According to cheag holicy we have to sowe only 26t questions

Answer 2

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