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Question: A 230.0 g piece of lead is heated to 80.0 deg C and then dropped into a calorimeter containing 633.0 g of water that initally is at 16.0 deg C. Neglecting the heat capacity of the container, find the final equilibrium temperature (in deg C) of the lead and water.
What concentration of Benzoyl peroxide (k_d = 1.45 * 10^(-6) L/mol-s, 60 deg C) would be needed to polymerize a 1.00 M solution of styrene to a molecular weight of 2500
Rubidium has two naturally occurring isotopes, rubidium -85 ( atomic mass = 84.9118 amu; abundance = 72.15%) and rubidium -87 (atomic mass = 86.9092; abundance = 27.85%). Calculate the atomic weight of rubidium.
The valence electrons of group 5A elemnts are in the 6s subshell. 8. The highest principle quantum number of period 2 elements is 2.
A buffer is to be made with a pH of 8.50 by adding hydrobromic acid to one of the following bases. Which base is the best choice for making this buffer
We have noted that water level rises to 62.4mL when a piece of metal of 48 grams is dropped into 50.0mL of H 2 O in a graduated cylinder. Determine the density of this metal?
Derive the rate law, and show that this reaction may follow the first-order equation at high pressures and the second-order equation at low pressures.
A segment of a DNA strand has base sequence of C-G-A-T-T-G-C-A. What is the base sequence of the other complementary strand of the double helix
Determine the heats of formation or the steric energies of the exo-and endo-anhydride adducts using a molecular mechanics program. What do these energies tell you about hte mechanism of the reaction
Identify (name) each pathway, the enzyme whose activity determines how much glucose-6-P is metabolized by that pathway, one effector (regulatory molecule) which controls the activity of each enzyme, and how the effector affects the activity of the..
Assuming that you could express and purify both components, describe TWO different experimental methodologies (including SALIENT details) that you would conduct to determine whether the two proteins interact in vivo in a mammalian cell line?
A solution is made by dissolving 92.4 g of a non-electrolyte in 800. g chloroform (Kb=3.63 degrees C-kg/mol and Tb=61.26 degrees celsius). The boiling point of this solution is 62.91 degrees celsius. What is the molar mass of the non-electrolyte
Carbon emits photons at 745 nm when exposed to blackbody radiation. How much energy would be obtained if 44 g of carbon were irradiated?
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