.The density of a gas at 1.00 atm and 25.0°C is 1.798 g/L, which of the...
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....
10. The valve between the 2.00-L bulb, in which the gas pressure is 1.80 atm, and the 3.00-L bulb, in which the gas pressure is 3.00 atm, is opened. What is the final pressure in the two bulbs, the temperature remaining constant? (8 pts) 3.00 L 2.00 L g/L 11. At 1000°C and 10 torr, the density of a certain element in the gaseous state is 29x10 Circle the element that is most likely the gas below. (6 pts) A)...
When 56.8 g of lead reacts with 3.50 L of oxygen gas, measured at 1.00 atm and 25.0 0 degrees * C , 60.1 kl of heat is released at constant pressure. What is AH for this reaction? (R = 0.0821L * atm / (Kmol)) 2Pb(s)+O 2 (g) 2PbO(s) ) When 56.8 g of lead reacts with 3.50 L of oxygen gas, measured at 1.00 atm and 25.0°C. 60.1 kJ of heat is released at constant pressure. What is AH°...
molar 7. How many grams of CO 28.01 /mol) must be bumed to produce 225 kJ of heat urma 2006 +020 200260 AH = -566 kJ c) 2238 ite a) 0.398 8 b) 0.795 g c) 2.52 g d) 11.1 g 3. Calculate the mass of excess reactant remaining after 4.50 mol of LHCO (67.96 R/mol) and 8.50 mol of H2504 (98.08 g/mol) reacted according to the equation shown below. 2LHCO3 + H2SO4 - Li2SO4 + 2H20 + 2002 e)...
A hydrocarbon gas has a density of 1.18 g/L at 20.°C and 1.00 atm. An analysis gives 85.7% C and 14.3% H. What is the molecular formula?
The mass of 560 cm3 of a gas at 0∘C and 1 atm is 1.60 g. Which gas could it be? a. SO2 b. CO2 c. O2 d. Cl2
A 1.80−L vessel contains 4.70 g of a gas at 1.00 atm and 27.0°C. (a) Calculate the density of the gas in g/L. g/L (b) What is the molar mass of the gas?
A 1.25 g sample of an unknown gas at 23 "C and 1.00 atm is stored in a 2.85 L flask. What is the density of the gas? density: What is the molar mass of the gas? molar mass: y/mol
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
What is the density of O2 (32.00 g/mol) gas at 19°C and 1.07 atm? A. 1.43 g/L. B. 24.0 g/L. C. 106.4 g/mL. D. 0.700 g/L. E. 22 g/L.