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What is the role of an indicator in an acid-base titration? In your answer, identify how an appropriate indicator is chosen and use the terms "end point" and "equivalence point" to explain how an indicator works.
Is there a reference website that lists all chemicals and the less costly yet effective analysis method for determining concentrations of their ions
Draw a three-dimensional structure of CH3CL. Include all non-bonding pairs in your drawing. Shoe the direction of the molecular dipole and indicate bond angles.
A flask containins a mixture of He(g) and Ne(g). The total pressure of gas in the flask is 950 torr. The mixture is 65.0% Ne(g) by mass. What is the partial pressure of He(g) in the flask
a compound having an approximate molar mass of 120-15 g has the following percent composition bymass carbon 38.44
Why E2 is favored over SN2, Sn2 requires a strong nucleophile while E2 requires a strong base. But relatively compared if you have a very strong base the E2 is preferred. Why is it so?
Consider the reaction between sulfite and a metal anion, X2-, to form the metal, X, and thiosulfate:2 X2-(aq) + 2 SO32- + 3 H2O(l) ? 2 X(s) + S2O32- (aq) + 6 OH- for which Eocell = 0.38.
Three pure compounds are formed when 1.00 g sample of elements X combine with, respectively, 0.472 g, 0.420 g, and 0.236 g of element Z. The first compound has the formula X2Z3.
If we took EXACTLY 1.00 ml of a 1.000 M solution of Cu(NO3)2 and placed it in 99.000 ml of water and mixed it, then took 2.00 ml of this solution and placed it in 18.000 ml of water.
a gas mixture with total pressure of 300 torr consists of equal masses of neatimc weight 20 and ar atomic weight 40.
Question- Balance the equations for the formation of H2S(g) and CS2(l) from their elements in their standard states. Include delta H°f for each reaction. Include the state of each element
A 50% by mole solution of ethanol and water is prepared. Both their partial volumes do not equal their pure partial volumes. The total volume is observable, however, there are two unknowns. Using an approximation how can two partial volumes be mea..
when 31 mL of 0.200 M HCl has been added to 39 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3
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