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You have prepared a saturated solution of X at 20C using 27.0 g of water. How much more solute can be dissolved if the temperature is increased to 30 C?
Describe the development of the modern periodic table. Include contributions made by Lavoisier, Newlands, Mendeleev, and Moseley.
the calorimeter itself absorbs a negligible amount of heat, calculate combustion eneergies (change of energies) for benzene in both kj/g and kj/mol.
Usually t-butanol absorbs water on exposure to the air. If the freezing point of a 10.0 g sample of t-butanol is measured as 24.59 degrees C, how many grams of water are present in the sample
A buffer system contains .55 M acetic acid and .47 M sodium acetate. What is its pH? The Ka for acetic acid is 1.8x10^-5.
Lead thiocyanate, rm Pb(SCN)_2, has a K_sp value of 2.00 times 10^{-5}.Calculate the molar solubility of lead thiocyanate in 1.00 it M rm KSCN.
Calculate the pH of the solutions having the following [H+]: a) 0.57 M pH=? b) 1.84 M pH=? c) 3.7*10^-5 M pH=?
Determine the total number of moles of solid sodium hydroxide required to react with 844.00mL of 0.8700M phosphoric acid (H3PO4)
Draw the structure of the product that is formed when the compound shown below is treated with the following reagents:
The mercury in a .8142g sample was precipitated with excess of H5IO6. The precipitate was filtered and washed free of the precipitating agent, and .4114g was recovered. Calculate the % of Hg2Cl2 in the sample
what volume of 3M sulphuric acid is required to neutralize all of the C 7 H 5 NaO 3 and the excess sodium hydroxide present after the initial reaction? Determine how much H 2 SO 4 was in excess?
Estimate the viscosity of a liquid mixture composed of methane = 59.30 mole%, propane = 37.46 mole%, and n-octane=3.24 mole% at a temperature of 311 K and pressure
A mixture of CaCO3 and CaO weighing 0.705 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.474 g.
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