The density (in g/L) of helium (He) gas at 0.913 atm and 719 K is:
A) 0.0154 g/L B) 0.0619 g/L C) 0.206 g/L D) 2.06 g/L E) 3.81 g/L
The density (in g/L) of helium (He) gas at 0.913 atm and 719 K is: A)...
A helium-filled balloon at 320.0 K and 1 atm, contains 0.25 g He, and has a volume of 1.23 L. It is placed in a freezer (T = 240.0 K), and its volume decreases to 1.06 L. Find ΔE for the gas (in joules). (Cp of He = 20.8 J/mol K.) A: -59.79 B: -86.70 C: -125.71 D: -182.28 E: -264.31 F: -383.24 G: -555.70 H: -805.77 Given that the ΔHorxn = -2842.0 kJ, for the following reaction: 2C3H5(NO3)3(l) →...
A helium-filled balloon at 305.0 K and 1 atm, contains 0.35 g He, and has a volume of 1.31 L. It is placed in a freezer (T = 240.0 K), and its volume decreases to 0.90 L. Find ΔE for the gas (in joules). (Cp of He = 20.8 J/mol K.)
.The density of a gas at 1.00 atm and 25.0°C is 1.798 g/L, which of the following is most likely the gas? a) CO2 b) NO c) SO2 e) Ar d) O2
1. A gas with a density of 1.107 g/L is at 301 K and 740.0 mm Hg. What is it's Molar Mass? 2. Phosgene, COCl2, is a deadly gas. What is its density in g/L at 298 K and 1.00 atm? 3. A gas mixture is 5.00 grams of Ne, 10.0 grams of He, and 15.0 grams of Ar gases. A container is kept at -100ºC and 7550 mL. What is the partial pressure due to Argon in mm Hg?
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....
how many moles of helium gas occupy 6.2 L at 303 K and 1.15 atm?
How many moles of helium gas occupy 10.0 L at 100 K and 3.50 atm?
Calculate the pressure in (atm) exerted by 4.24 g of helium gas,He, at 10.0 degree C when placed in a 470 mL container
The stopcock connecting a 1.66 L bulb containing nitrogen gas at a pressure of 9.13 atm, and a 3.77 L bulb containing oxygen gas at a pressure of 4.39 atm, is opened and the gases are allowed to mix. Assuming that the temperature remains constant, the final pressure in the system is atm. A mixture of helium and hydrogen gases is maintained in a 9.58 L flask at a pressure of 2.41 atm and a temperature of 55 °C. If...
The density of a gas is 7.4 g/L at a pressure of 1.47 atm and a temperature of 35.38 °C. What is the molar mass (in g/mol) of the gas?