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Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.
1. 0.54 M2. 2.8 × 10-11 M3. 3.5 × 10-4 M correct4. 1.22 M5. 3.2 × 10-2 M
The vapor pressure of a liquid chloroform, CHCl3, is 400.0 torr at 24.1 c and 100.0 torr at -6.3C , what is Hvap of chloroform
Calculate the molar solubility of strontium chromate in water at 298 K if Ksp = 3.6 * 10-5.
If a 100.0 g sample of water at 60.0 degreesC is added to a 100.0 g sample of water at 10.0 degrees C, determine the final temperature of the water.
The compounds Na2O, CdS and ZrI4, all can be described as cubic closest packed anions with the cations in tetrahedral holes. What fraction of the tetrahedral holes is occupied for each case?
Calculate the number of grams of HC2H3O2 needed to make 450 mL of 0.322 M solution.
Aluminum has a specific heat of 0.880 J/g-deg. How many joules are needed to heat 155g of Al from 20.0oC to 75.0oC
how fast must a 144.1g baseball travel in order to have a de Broglie wavelength that is equal to that of an x-ray photon with = 73 pm?
Which of the seven cations will be the hardest to detect (same anions as above), Why do you think this? If two or more are possible explain why.
What are the concentrations of HSO4-, SO42-, and H+ in a 0.27 M KHSO4 solution? (Hint: H2SO4 is a strong acid; Ka for HSO4- = 1.3 10-2.).
Given the reaction 4Al(s)+302(g)--2Al2O3(S), what is the minimum number of moles of oxygen gas required to produce 1.00 mol of aluminum oxide?
Suppose that 1.02 of rubbing alcohol evaporates from a 75.0 aluminum block. If the aluminum block is initially at 25C, what is the final temperature of the block after the evaporation of the alcohol?
What causes the colors of these complexes? How do these colors relate to the expected positions of these ligands in the spectrochemical series?
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