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1. (a) What is the molarity of a 0.050 N solution of Ba(OH)2 (calculated on the basis of complete neutralizaton of the alkali).
(b) What is the normality of a 0.050 M H3PO4 (based on neutralization of the acid to the HPO4^2- ion?
Weak base NH3 has Kb = 1.75 * 10^-5. Calculate the concentration of hydronium and pH of 0.252 M NH3 aqueous solution.
what is the theoretical and percent yields of ethanol if 648 grams of sucrose undergoes fermentation and 349 grams of ethanol is obtained.
The vapor pressure of pure methanol, CH3OH, at 30 C is 160. torr. How many grams of the nonvolatile solute glycerol, C3H5(OH)3, must be added to 131. g of methanol to obtain a solution with a vapor pressure of 133. torr.
The atomic radius of K is 227 pm as well as that of K+ is 138 pm. Compute the percent decrease in volume that take place when K(g) is converted to K+(g). The volume of a sphere is 4/3p3, where r is the radius of the sphere.
Question- Calculate delta H^0 vaporization and delta S^0 vaporization for hydrogen peroxide- H2O2(l) = H2O2(g). Assuming these values are independent of temperature what is the normal boiling point of H2)2(l)
calculate the molarity of acetic acid in a vinegar sample knowing that 5.00 ml of vinegar requires 43.50ml of 0.105m
Describe in 75 words the structure of the carbon atom. What types of bonds does carbon form and why?
Question- What is the maximum volume of 4.9E-5M K2CrO4 that, added to 17.0ml of a solution that is 8.6E-5M Ba(NO)2 and 5.4e-6 M Pb(NO3)2, will precipitate PbCrO4 bit not BaCrO4? For PbCrO4, Ksp=1.8e-14 and for BaCrO4, Ksp=1.2e-10
During the friedel-crafts akylation experiment of mixing toluene as well as 1-chlorobutane to produce p-sec-butyltoluene.
What is the molarity of 175 mL of a solution containing 2.18 g of Na2SO4·10H2O? 0.00377 M B. 0.644 M C. 0.00878 M D. 0.00118 M E. 0.0387 M
What is the most electronegative element on the periodic table and why?
Show how each of the following compounds could be prepared from 3-pentanone. In most cases more than one synthetic transformation will be necessary.
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