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The purity of a substance will often affect the melting and boiling points. This is used by chemists to assess the purity of a product. How does the purity of the substance affect the melting and boiling points?
How do we identify a strong base that is also a weak nucleophile? Because elimination reactions prefer strong base and weak nucleophile reagents
you purchase a cup of coffee, but, at 98.4 degrees C, it is too hot. You add 45.5 g of ice that is -2.2 degrees C to the 248ml of coffee. What is the final temperature of the coffee?
Solve an equilibrium problem (using an ICE table) to calculate the of each of the following solutions. A.) .16 M CH3NH2
Question- The quilibrium constant, at 25 degrees centigrate, for the reaction below is 1.34* 10 to the power 77 what is the E zero for this reaction 2tl + BrO3- + 2tl3+ +BR- + 3H2O
What is a specific example that exists foreach: biochemical, pharmaceutical and diagnostic chemical reactions in healthcare and why might it be of importance to healthcare professionals?
When compound Y is treated with hot, basic potassium permanganate solution, the only products produced are acetic acid (CH3CO2H) and carbon dioxide. Propose a structure for compound Y.
An ammonia/ammonium buffer solution contains 0.49 M NH3 and 0.62 M NH4+. The Kb value of ammonia is 1.8x10^5. Calculate the pH of this buffer.
What is the structure of the precipitate that forms after the sulfuric acid
An enzyme was assayed at a preliminary substrate concentration of 2x10^-5 M. In six minutes half of the substrate had been consumed. The km for the substrate is 5x10^-5M. Compute the vmax.
Calculate the acidity constant of hypochlorous acid - Is HOCl acid dissociation endothermic or exothermic - how much total chlorine needs to be added to the water in order to achieve [HOCl] = 2 mg/L as Cl2?
a chemical reaction produces 0.884mol of H2S gas. what volume will that gas occupy at STP?
when doing a synthesis of 2-chloro-2-methylbutane 1. Why must the reaction be carried out at room temp 2. Why is the crude product washed with sodium bicarbonate
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