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In a particular titration experiment a 25.0 mL sample of an unknown monoprotic acid required 30.0 mL of .200 M NaOH for the end point to be reached. What is the concentration of the acid?
water and titrated with 0.0633 M NaOH. After 10.0 mL of base has been added, the pH was determined to be 5.07. What is the Ka for the acid?
Consider the balanced chemical reaction shown: 4PH^3 (g) + 8O^2 (g) ---> 6H^2O (l) + 1P^4O^10 (s) In a certain experiment, 8.92g of PH^3 reacts with 9.60g of O^2(g)
A 2kg sample of lead is heated from a temperature of 30 degrees celsius to a temperature of 60 degrees celcius. The specific heat of lead is 128 J/kg degrees celsius. How much heat energy di this sample absorb?
An unknown compound contains carbon, hydrogen, oxygen, and sulfur atoms. When a 10.00 mg sample of the unknown compound was combusted, it produced 16.27 mg of CO2, 5.55 mg of water, and 7.90 mg of SO2. What is the empirical formula of the unknown ..
Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. ASsume that the volumes are additive.
Calculate the equilibrium constant, K. (e) Which side of the reaction (reactants or products or neither) is favored structurally?
A 98 L sample of dry air cools from 138°C to -30.°C while the pressure is maintained at 2.85 atm. What is the final volume?
How many grams of Ba(OH)2 will be needed to neutralize 76 mL of stomach acid if stomach acid is 0.14 M HCl?
What is the Zn2+: Cu2+ concentration ratio in the following cell 25 degrees if the measured cell potential
Chlorination via radical halogenation is a very unselective process and can lead to the formation of all three of the below products. Estimate the relative percentages of each product that will be formed using this means of halogenation. Presume t..
how would each affect the calculated molecular mass of the solute?
What is the longest wavelength of light that can be emitted by a hydrogen atom that has an initial configuration of 7p1?
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