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Calculate the pH and the pOH of each of the following solutions at 25 °C for which the substances ionize completely:
(a) 0.000259 M HClO4
(b) 0.21 MNaOH
(c) 0.000071 M Ba(OH)2
(d) 2.5 MKOH
how do you prepare 50mL of 0.15M malonic acid, 0.020M manganese sulfate and 0.5% (w:v) starch from malonic acid CH2(COOH)2 reagent grade, starch (soluble), and manganese (II) sulfate monohydrate, MnSO4.H2O (s)?
Compute the volume in milliliters of a .45 mol/L barium chlorate solution that contains 125. mmol of barium chlorate.
When a 1.30-g sample of ethanol (alcohol) is burned in a calorimeter, the heat released increases the temperature of 870g of water in the calorimeter from 18.5 C to 28.9 C .
Determine whether the following pairs of structures are actually different compounds or simply resonance forms of the same compounds.
question the half-life of strontium-90 90sr is 25 years. this means that half of any given quantity of 90sr
What is the airborne radioactivity concentration? Using 10 CFR 20, if the particles are composed of cobalt oxide, how many DAC does this represent?
bro3- 5br- 6h --gt 3 br2 3h2oif 25.0 milliliters of .2oo molar bro3- is mixed with 30.0 milliliters of .450-molar
Air flows through a convergent-divergent nozzle from a large reservoir in which the pressure and temperature are maintained at 700 kPa and 60°C, respectively.
Determine if the reactants shown on the right would result in the formation of a precipitate. Choices can be used more than one time or not at all.
Problem- Galium has two naturally occurring isotopes: 71Ga with a mass of 70.9171 amu and a natural abundance of 39.89% and 69Ga. What is the mass of 69Ga in units of amu
write a detailed mechanism for the reaction of salicylic acid with acetic anhydride showing clearly the function of the catalyst,
If 18.9 mL of base are required to neutralize 25.0 mL of the acid, what is the molarity of the potassium hydroxide solution?
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