Which of the following pure gases has the greatest density at 1.0 atm and 305 K?...
QUESTION 6 Which of the following has the greatest number of atoms? A. 1.0 mol He B.0.60 mol H2 C.20 g potassium D.8.5 mL H20 (Density of H20 = 1 g/mL) E 22.6 g KMnO4
If the gas has a molar mass of 86 g/mol, what is the density of a gas (in g/L) at 25.0°C and 124.1 kPa? Consider four identical 1.0-L flasks containing the following gases each at 25°C and 1 atm pressure. For which gas do the molecules have the greatest average kinetic energy? A. Ne B. Ar C. He D. Kr E. same for all the gases
Which one of the following has the greatest entropy? a) 2 mol N2(g) at 0.5 atm and at 700oC. b) 1 mol N2(g) at 0.5 atm and at 400oC. c) 1 mol N2(g) at 0.5 atm and at 700oC. d) 1 mol N2(g) at 1 atm and at 400oC.
26) Which of the following samples has the greatest density at STP? A) O2 B) SF6 C) Xe D) CO2 E) All of these samples have the same density at STP.
compressibility and In comparing gases with liquids, gases have A) greater; smaller D) smaller; greater density. C) Smaller; smaller B) greater; greater E) none of the above Which process is exothermic? A) solidgas D) gas B) liquidgas E) none of the above Csolid liquid liquid Which pair of molecules has hydrogen bond interactions? ) NH3 and CH4 ) CO2 and CO2 B NH3 and C2H5OHC) CH4 and CH4 E) CO2 and CH4 hich combination of characteristics is most likely to...
U. 409UR 6. The density of hydrogen gas in a flask is 0.147 g/L at 305 K. What is the pressure inside the flask? a. 0.139 atm b. 1.19 atm c. 1.83 atm m d. 2.98 atm e. 3.69 atm D. pm Pr=DRT (6.1470) (305)
U. 409UR 6. The density of hydrogen gas in a flask is 0.147 g/L at 305 K. What is the pressure inside the flask? a. 0.139 atm b. 1.19 atm c. 1.83 atm m d. 2.98 atm e. 3.69 atm D. pm Pr=DRT (6.1470) (305)
How heavy is 1.00 L of each of the following gases at 1 atm pressure and 25.00 °C: a. O2 b. N2 c. CO₂ d. H2O
I just need help with #4 in the photo thanks! Use the following to answer questions 3-4: Four identical 1.0-L flasks contain the gases He, C1, CH, and NH,, each at 0°C and 1 atm pressure. 3. For which gas are the molecules diatomic? A) He B) CI, C) CH, D) NHÀ E) all gases the same 4. Which gas has the highest density? A) He B) CI C) CH. D) NHÀ E) all gases the same
#1) Which of the following gas samples contains the greatest mass of gas molecules? a. 1 L of He at STP b. 1 L of Xe at STP c. 1 L of H2 at STP d. All are the same #2) Which physical property/state is incorrectly matched? a. liquids - rigid shape b. gases - easily compressed c. gases and liquids - flow d. solids - higher density than gases e. liquids - incompressible