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37) What is the volume occupied by 4.00 g of O2 gas at STP? A) 2.8...
Which of the following processes have a ΔS > 0? A) Na2CO3(s) + H2O(g) + CO2(g) → 2 NaHCO3(s) B)CH4(g) + H2O(g) → CO(g) + 3 H2(g) C)CH3OH(l) → CH3OH(s) D)N2(g) + 3 H2(g) → 2 NH3(g) E)All of the above processes have a DS > 0.
1) A 0.477 mol sample of O2 gas has a volume of 12.2 L at a certain temperature and pressure. If all this O2 were converted to ozone (O3) at the same temperature and pressure, what is the ozone volume (in liters)? 3 O2(g) → 2 O3(g) 2) Which of these will have a volume of 22.4 L at STP? a 12.01 g of C(s) b 16.04 g of CH4(g) c 36.46 g of HCl(aq) d 32.05 g of CH3OH(l)...
6. A volume of 310 ml of O2 (g) is collected over water at 20C at a pressure of 738 torr. (a) What is the partial pressure of the O? (b) What would be its volume when dry at STP? (Vapor pressure at 20°C is 17.5 torr) (10) 0 mol N2 exerts a pressure of 800 torr. What is the partial pressure of each gas? (5) 8. A mixture of 2.00 mol H2, 3.00 mol NH3, 64.00 mol Co2, and...
88. What volume of 0.921 M Na2CO3 solution contains 74.0 g of NazCO3? a. 0.642 L b . 8.52 * 10 L c.0.757 L d. 7.22 x 10'L e. 1.31 L 89. An aqueous nitric acid solution has a pH of 2.15. What mass of HNO is present in 20.0 L of this solution? a. 0.11g b. 0.022 g c. 3.7 g d. 6.8 g e. 8.9 g 90. The pH of purified water (or of a neutral solution) is...
The answer is d. Why? 10. What volume of H2 gas at STP can be produced by the electrolysis of HoO (1) by a current of 0.500 A for 35.0 minutes? (a) 22.4 L (b) 44.8 L (c) 244 mL (d)122 mL 10. What volume of H2 gas at STP can be produced by the electrolysis of HoO (1) by a current of 0.500 A for 35.0 minutes? (a) 22.4 L (b) 44.8 L (c) 244 mL (d)122 mL
Write the equilibrium constant expressions for the follow- ing reactions: (a) 2 CO(g) + O2(g) 2 2 CO2(8) (b) Mg(s) + HCl(aq) 2 MgCl2(aq) + H2(8) (c) HF(aq) + H2O(l) 2 H30+(aq) + F(aq) (d) S(s) + O2(8) 2 SO2(8) e 1 11
question 2 and 3 could be answer is a complete question Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following statement should be true? Statement (I): The concentration of fluoride ion F will decrease. Statement (Il): The pH of the buffer will decrease. Statement (IIl): The concentration of H30* will decrease. a) (0) b) (l) c) (IlI) d)(0) and () e) (0) and (II) f...
please show work 11)2SO2(g) + O2(8) 2503(8) For the reaction at equilibrium, ifO2 is removed, the amount of SO2 present 2 is removed, the amount of SO2 present will 11) A) decrease B) increase C) stay the same 12) According to the Arrhenius concept, if HNOs were dissolved in water, it w A) a source of Hions. B) a source of hydroxide ions. C) an acid. D) a base. E) a proton acceptor. vater, it would act as12) 13) The...
please explain and help calculate the orange cirlced ones L in volume at STP 1. One mole of an IDEAL GAS occupies a) 12.2 6) 22.4 c) 23.6 d) 40 (2What are the units for the molar volume of a gas? -a) Moles/liter -b) Liters/mole Grams/mole d) Moles/grams What is the gas produce in this experiment CaCO3+ HCI? a) O2 b) CO2 c) NO2 d) H2 e) Natural gas on: 2:23 los molhoz 4 When CaCO3 react with HCI, calculate...
93. 286 grams of N2 gas are placed into a canister with a volume of 7.5 L at 150oC. Calculate the pressure exerted by the gas inside the canister. a) 17 atm b) 47 atm c) 31 atm d) 1.3 atm e) 0.042 atm 94. Calculate the mass of NaN3 needed for an air bag to produce 100.0 L of N2 gas at 85.0oC and 1.00 atm, using the following balanced chemical equation. 2 NaN3 (s) → 2 Na (s)...