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find the contour length (chain length) for a fully extended polythylene molecule that has a degree of polymerization of (n=45000),given that the length of c-c bond is 1.54 Ao.
if 19.65mL of .145M nitric acid is required ti neutralize 50.0mL of barium hydroxide what is the molar concentration of the base? 2HNO3+Ba(OH)2-->Ba(NO3)2+2H2O
How much will the reaction speed increase if the concentration of NO is increased from exactly 0.35 moles/liter to exactly 1.51 moles/liter while the concentration of oxygen
how many grams of lead chromate form when a 1.00g sample of Pb(NO3)2 is added to 25.0 mL of 1.00 M K2CrO4 solution
At 700 K the equilibrium constant for the reaction is Kp = 0.76. CCl4(g)-> C(s) + 2 Cl2(g) A flask is charged with 2.00 atm of CCl4, which then reaches equilibrium at 700 K. (a) What fraction of the CCl4 is converted into C and Cl2?
Trees in cold climates may be subjected to temperatures as low as -60 C. Estimate the concentration of an aqueous solution in the body of the tree that would remain
A hot-air balloon has a volume of 875 L. What is the original temperature of the balloon if its volume changes to 955 L when heated to 56 degrees celcius
what is the emperical formula of a compound that is 17.552% Na, 39.696% Cr, and 42,752% O?
Two liters of a buffered solution are created from .55 M HC3H5O3 (Ka= 1.3 E-4) and .45 M NaC3H5O3. what is the pH of the solution?
What are the subscripts in the empirical formula of this compound?
If 3.8 kcal of energy is released when 1 gram of glucose is combusted, calculate how many kcals are released when 0.689 moles of glucose are combusted
Rather than weigh the sample on a balance a chemist wants to dispense the liquid using a pipette. What volume (in mL) should she measure out?
When 7.00 moles of gas A and 3.00 moles of gas B are combined, the total pressure exerted by the gas mixture is 1.0 atm. What is the partial pressure exerted by gas A in this mixture?
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