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a. The boiling point elevation of a solutionof 0.111 mol of a sugar in 59 g of water is 0.9651 degrees celsius. Calculate Ksubb from this data.
b. p-Dichloobenzene (PDCB) is replacing naphthalene as the active ingredient in mothballs. Calculate the value of K sub f for camphor if a 0.289 m solution of PDCB in camphor decreases the freezing point pf camphor by 11 degrees celsius.
Which of the following is a neutralization reaction?
Calculate the energy necessary to boil 100.0 g carbon disulfide, CS2, at its normal boiling point.
consider the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and hydrogen gas. if 3.72
Because of its semiconducting properties CdS, is sometimes used in electronic devices. The band gap energy for CdS is 2.40 eV. What is wavelength of a photon with this energy?
At 700 K, the equilibrium constant, Kc, for the reaction H2 + I2 2 HI is 49.0. How many moles of H2 would have to be added to 1.00 mole of I2 in a 10.0-L flask to get a 90.0% yield
The vapor pressure of chlorine dioxide (ClO2) is 155 Torr at -22.75 ? C and 485 Torr at 0?C. What is the normal boiling point of chlorine dioxide?
for the reaction P4+S8=P4S10 what is the maximum amount of P4S10 which could be formed from 17.02 g of P4 and .128 mol of S8?
for the reaction Mg+2HCl yeilds H2+MgCl2, calculate the percentage yield of magnesium chloride if 100.g of magnesium react with excess hydrochloric acid to yield 330.g of magnesium cholride.
How many total atoms are there in each unit cell? (b) What is the volume of one unit cell in Å3? (c) Assuming that the atoms are spheres and the radius of each sphere is 1.64 Å
what is the concentration of chromium ion present in a 0.07092 M solution of potassium hydroxide in contact with a large excess of a precipitate
This given reaction: 2 O3(g) -→ 3 O2(g) has an empirically determined rate law (with a single unimolecular event). Determine what is the observed rate If k =4.0 × 105s-1, [O2] = 0.2M and [O3] = 0.5 M?
What is the ph at the equivalence point for the titration of .20M nitrous acid by .20M sodium hydroxide
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