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- Estimate ΔrH° for forming 2 mol ammonia from molecular nitrogen and molecular hydrogen. Is this reaction exothermic or endothermic?11. You have a solution that is 18.2% sodium thiosulfate, Na2S2O3 , by mass. If 75.0 g of the sodium thiosulfate solution is diluted to 250.0 mL with water, what is the molarity of the resulting solution? please show workKo is related to Ko by the equation K, = Kc (RT)An, What is the value of An for the reaction below? N2 (g) + 3H2 (g)= 2NH3 (g)
- What volume (in L) of 2.30 M FeBr2 would be required to obtain 0.502 moles of Br ions? Provide your answer to 3 decimal places.6. What mass of Ba(103) can be dissolved in 500.0 mL water at 25°C? Kap=1.57 x 10⁹• Microsoft OneDrive aching and lea x * OWLV2 | Online teaching and lea X enow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take A student ran the following reaction in the laboratory at 380 K: CH,(g) + CC4(g) =2CH,Ch(g) When she introduced 4.86x10-2 moles of CH,(g) and 6.46x102 moles of CCI,(g) into a 1.00 liter container, she found the equilibrium concentration of CCL(g) to be 5.53x10-2 M. Calculate the equilibrium constant, Ke, she obtained for this reaction. K. =| Submit Answer Retry Entire Group 9 more group attempts remaining Prvious Next> 12:13 PM 10/13/2020 hp inort sc 12 delete home end num 8 backspace lock (7 近
- Name 33 common elements and their predominant species in the environment (e.g., phosphorus (P) exists as oxidation state P5+ that occurs as the phosphate oxyanion (PO43-) with three different protonation states).You have a flask weighing 121.214 g. To this flask, you added 25.00 mL KCl(aq) solution. You weigh the flask, it is now 150.234 g. You then take the flask to a heating source and evaporate all solvents. When the flask cool down to room temperature, you weigh the flask again, it is 124.231 g. What is the molality of the KCI (aq) solution? The amus for K is 39 and Cl is 35.5, respectivelyBaCO3 - Ba2+ + CO3? reaction was given. It is known that the carbonate anion is hydrolyzed in [HCO ][OH] [co? ] CO3- + H20 = HCO; + OH Kb1 and [H2CO3][OH¯] [HCO3] HCO; + H2O = H;CO3 - OH- Kb2 = form. Since Ka1 = 1.44x10-7, Ką2 = 4.7x10-11 and KspBaco3 = 5.1x10-9, calculate the solubility of BaCO; salt at pH = 8 and 12 depending on the pH value.