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Ethanol (C2H5OH) melts at -114°C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g·K and 2.3 J/g·K, respectively. How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135°C to liquid ethanol at -50°C?
Describe in 75 words the structure of the carbon atom. What types of bonds does carbon form and why?
Find the partial pressure of each produce and the total pressure in the flask at the end of the reaction.
What is the expected Nernst equation, in mV, for each decade change in the hydrogen ion concentration for a glass elecrode
Hydrochloric acid is added to zinc. How many mls of 0.500 M HCl are needed to react completely with 25.0 g of zinc metal
Write the equation showing the S-trans to S-cis equilibrium of the two conformations for a. (E)-1,3-pentadiene b. (Z)-1,3-pentadiene and which equilibrium will favor the s-tans conformation more strongly?
When 27.5 mL of 0.520 M H2SO4 is added to 27.5 mL of 1.04 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate
Looking at the effect of ionic strength on activity coefficients, why would the initial slope for Ca2+ be steeper than that of K+
How many moles of oxygen atoms are combined with 4.20 moles of chlorine atoms in Cl2O7?
Pretend you run a reaction and your theoretical yield is 5.25 grams,but you only isolate 4.25 grams. What is your percent yield. use one decimal place
N-Phenylmaleimide, can act as a dienophile in the Diels-Alder reaction Draw the structure of the product that would be formed by the treatment of N-phenylmaleimide with
A tank containing carbon dioxide at 400K and 50 bar is vented until the temperature in the tank falls to 300K. Assuming there is no heat transfer between the gas and the tank
what are the differences in the type of inhibition caused by heat, acid or base, and heavy metal ions on enzyme activity?
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