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Calculate thePH at the equivalence point in titrating 0.100 M solutions of each of the following with 9.0×10^ 2 M NaOH... calculate the ph for HCLO2
Consider a cylinder filled with air with a piston and spring arrangement on top. The external pressure is 1 bar, the initial temperature of the air in the cylinder is 25 C.
Use the masses of carbon dioxide, rm CO_2, and water, rm H_2O, to determine the empirical formula of the alkane component.
When each of the following pairs of aqueous solutions is mixed, does a precipitation reaction occur? If so, write the formula and name of the precipitate. (Type "NONE" in the blanks if there is no precipitation reaction.)
A mixture of CuSO4 * 5H2o and MgSO4 * 7H2O is heated until all water is lost. If 5.020g of the mixture gives 2.988g of the anhydrous salts, what is the percent by mass of CuSO4 * 5H2O in the mixture
Solutions of sodium thiosulfate are used to dissolve unexposed AgBr ( Ksp= 5.0E-13) in the developing process for black-and-white film. What mass of AgBr can dissolve in 1.00L of 0.500M Na2S2O3?
A 1.00 g sample of an unknown acid required 17.0 mL of .650 M NaOH to neutralize. What is the molar mass of the unknown acid?
If you have 100ml of a .1M tris buffer at PH 8.3 and you add 3.0 ml HCl what will be the new pH? (PKa of Tris = 8.3)
Explain why bubbles are observed to emerge from the jar when it is in the boiling water. b. Explain why the lid "pops down" on the jar top soon after removing the jar from the boiling water.
An unknown metal X with a mass of 28 grams absorbs 58 J of heat. calculate the heat capacity if Its temperature raises from 31.1 °C to 39.9 °C.
Calculate the cumulative acid equivalents per square meter that were deposited in the watershed over the entire period 1880-1950.
An automobile gasoline tank holds 35 kg of gasoline. When the gasoline burns, 88 kg of oxygen is consumed, and carbon dioxide and water are produced.
How much heat (in kJ) is evolved in converting 1.00 {mol} of steam at 160.0C to ice at -45.0C? The heat capacity of steam is 2.01 J/g*C and of ice is 2.09 J/g*C.
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