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Explain why we take two consequent concurrent reading for calculation in titration? Explain is there any specific reason for that?
Sodium bromide, used to produce silver bromide for use in photography, can be prepared as shown in the following equations. How many kilograms of iron are consumed to produce 4.15 × 104 kg NaBr
Phenol is a weak acid that is sometimes used as a disinfectant. Calculate the pH of a solution of 0.0100 M phenol. Ka for phenol is 1.3 X 10-10.
what is the root mean square distance travelled by an iodine molecule in benzene at 25 Celcius in 1.0 seconds.
A reaction takes place at a constant pressure of 1.10 atm with an internal energy change of 71.5 kJ and a volume decrease of 13.6 L.
At 373 K, kp=0.416 for the equilibruim 2NOBR->2NO+Br2. if the pressures of NOBr and NO are equal, what is the equilibruim pressure of Br2
A tank having a volume of 1000 ft3 contains 22 lb of CO2, 46 lb of O2 and 154 lb of N2. What pressure will be indicated by a pressure gage attached to the tank if the gas is at ambient temperature (80°F)
What is the pH of the solution at the equivalence point for the titration of 100 mL of a .786 M HCO2H solution with a .786 M Solution of sodium Hydroxide? Formic acid has a Ka=1.80*10^-4
consider the combustion of methane, CH4:CH4 + 2 O2 (g) -->CO2(g) + H2O suppose 1.5 mol of methane is allowed to react with 4 mol of oxygen what is the limiting reagent?
The energy change, ?H, associated with the following reaction is +81 kJ. NBr3(g) + 3 H2O(g) → 3 HOBr(g) + NH3(g) What is the expected energy change
If He gas has an average kinetic energy of 8970 J/mol under certain conditions, what is the root mean square speed of Cl2 gas molecules under the same conditions
PH for the reaction 2 H2O (l) H3O+(aq) + OH-(aq) is +55.8 KJ/mol. and the equilibrium constant for the reaction is Keq= 1.0x10-14. What is ?S for this reaction
From the 1H NMR spectrum of dibenzalacetone can you deduce what stereoisomer(s) of dibenzalacetone is (are) formed. The chemical shift of the alkene protons is downfield from the expected resonance. What is the shift due to
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