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By how much will the pH change if 0.025 mol of HCl is added to 1.00 L of the buffer that contains 0.15MHC2H3O2and 0.25MC2H3O2-? UseKa= 1.8 × 10-5for HC2H3O2.
The solubility-product constants, Ksp, at 25 Celcius for two compounds [iron(II) carbonate, FeCO_3, and cadmium(II) carbonate, CdCO_3 are given by the table
a 31.0-g sample of water at 290. k is mixed with 48.0 g water at 340. k. calculate the final temperature of the mixture
Problem - In precipitation reactions, why are ammonium salts used over barium salts. Why couldn't barium salts be used instead. Provide expert help to solve the above question
What is the pH at the equivalence point when when 25.0mL of 0.100M hypochlorous acid (HClO) is titrated with 0.200M KOH. Ka HClO = 2.9*10^-8 It asks that all appropriate equations be included.
Complete combustion of 6.00 g of a hydrocarbon produced 19.3 g of CO2 and 6.58 g of H2O. What is the empirical formula for the hydrocarbon?
This exothermic reaction is catalyzed by MnO2(s). 2H2O2(aq) => 2 H2O(l) + O2(g) Which of the following will increase the rate of this reaction? 1. Raising the temperature 2. Increasing the surface area of MnO2(s)
What is the Na concentration in 3.25M Soduim Sulfate, 1.5M Sodium Carbonate, 0.885 Sodium Bicarbonate
Assuming no loss of water and a heat capacity for the vessel of 10.0 J/C, what is the final temperature of the system ( C of copper = 0.387J/gC) ? What is the final temperature?
Find the mass of urea (CH4N2O) needed to prepare 50.8 g of a solution in water in which the mole fraction of urea is 7.55×10?2.
The compound [Fe(CO)4(PMe3) could adopt a trigonal bipyramidal geometry with the phosphine in either an axial or an equatorial position. (a) Indicate the point group of the molecule
water to give a solution that has a vapor pressure of 37.2 torr at 35 °C? Assume complete dissociation of the solute and ideal solution behavior
Give the number of atoms in the unit cell. Assume the structure consists of identical atoms. face-centered cubic a. one b. two c. four d. eight
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