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MISSED THIS? Read Section 67 (Pages 235-238): Watch [WE 6.12 Hydrogen gas (a potential future fuel) can be formed by the reaction of methane with water according to the following equation: CH₁(g) + H₂O(g) → CO(g) + 3H₂(g) In a particular reaction, 26.5 L of methane gas (measured at a pressure of 730 torr and a temperature of 25 °C) is mixed with 23.0 L, of water vapor (measured at a pressure of 704 torr and a temperature of 125 C). The reaction produces 26.0 L of hydrogen gas at STP. Part A What is the percent yield of the reaction? 15. ΑΣΦ Submit Request Answer 36
Part A A steel bottle contains hydrogen gas at STP. What is the final pressure if the temperature is changed to 135°C? 0.730 atm O 1.37 atm O 0.669 atm O 1.72 atom O 1.49 atm
In the reaction shown here, 4.55 L of O₂ was formed at P = 751 mmHg and T = 308 K. 2Ag₂O(s)-4Ag(s) + O₂(g) Part A How many grams of Ag₂O decomposed? Express the mass to three significant figures and include the appropriate units. HÅ Value Units ?
Part A In Lhasa, Tibet, the elevation is 12,000 feet. The altimeter reading in an airplane is 19.50 in Hg. This pressure is equal to 9.58 495 1.61 23.7 O 0.651 atm.
What is the Celsius temperature of 100.0 g of chlorine gas in a 68.0-L container at 800 mm Hg? 345°C 891°C 36.1°C 618°C O 470000°C
The concentration of carbon monoxide in a sample of air is 6.0 x 10-6. There are O 1.1 * 1020 O 1.4 × 10²1 O 2.3 × 10-7 O 1.4 x 1017 O 1.8 1018 molecules of CO in 1.00 L of this air at 721 torr and 23°C.
Part A The atmospheric pressure is 775 mm Hg. What is the pressure in inches of Hg? 30.5 in Hg O 14.4 in Hg O29.3 in Hg 1.02 in Hg O 15.3 in Hg
▾ Part A A gas occupies 22.4 L at STP and 23.0 L at 100°C and 1.25 atm pressure. How many moles of gas did the system gain or lose? 0.02 moles lost O 0.02 moles gained 1.30 moles lost 0.06 moles lost O 0.07 moles gained
MISSED THIS? Read Section 6.7 (Pages 235-238): Watch [WE 6.12 Automobile air bags inflate following a serious impact. The impact triggers the following chemical reaction: 2NaNa(s) 2Na(s) + 3N₂(g) Part A If an automobile air bag has a volume of 11.8 L, what mass of NaNs (in g) is required to fully inflate the air bag upon impact? Assume STP conditions. Express your answer in grams to three significant figures. 195] ΑΣΦ m ? g
Part A What volume is occupied by 0.102 mol of helium gas at a pressure of 0.96 atm and a temperature of 302 K ? Express your answer using two significant figures. V = 15| ΑΣΦ www. ? L
▾ Part A Hydrogen and oxygen combine to form H₂O via the following reaction: 2H₂(g) + O2(g) → 2H₂O(g) How many liters of oxygen (at STP) are required to form 13.4 g of H₂O? Express the volume to three significant figures and include the appropriate units. V = μA Value Units 158827 ?
MISSED THIS? Read Section 6.4 (Pages 222-225); Watch KCV 6.3. IWE 6.5. A cylinder contains 28.5 L of oxygen gas at a pressure of 2.0 atm and a temperature of 305 K. How much gas (in moles) is in the cylinder? Express your answer to two significant figures. 72 15. ΑΣΦ ? mol
In the following reaction, what mass of Ag2O(s) (in grams) is required to form 379 mL of oxygen gas at P = 735 mmHg and 25.0°C? 2 Ag2O(s)→ 4 Ag(s) + O2(g) Express the mass to three significant figures and include the appropriate units. mass= JA Value Units ?
Part A The mass of a sample of gas is 827 mg. Its volume is 0.270 L at a temperature of 88 °C and a pressure of 975 mmHg. Find its molar mass Express the molar mass to three significant figures and include the appropriate units. molar mass= μA Value Units ?
Part A What is the pressure in a 11.5-L cylinder filled with 0.455 mol of nitrogen gas at a temperature of 327 K? Express your answers to three significant figures. 15| ΑΣΦ P = www. ? atm