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Calculate the pH of the solution that results upon mixing 20.0 mL of a 0.200 M HCl with 25 mL of:
a. distilled waterb. 0.132 M NaOHc. 0.132 M NH3 d. 0.232 M NaOH
The compound ZnI4 is best described as anions in a face-centered cubic unit cell with the cations in the tetrahedral holes. What is the density of this compound?
A 350.0 gram sample of copper is initially at 25.0 °C. It absorbs 12.50 kJ of heat from its surroundings. What is its final temperature, to the nearest tenth of a degree?
Determine what is the mass percent yield from 2.57 grams of Sb in excess Sulphur , if 1.56 g of Sb 2 S 3 is obtained?
Elemental exonium (not a real element) consists of two major isotopes
how do you find the specific heat of platinum if 23.6 grams is heated from 10.0c to 20.0c using 30.68 J of heat.
Compare the percent ionization of the base in (a) with the percent ionization of the base in (b).
if you have 370 ml of water at 25 degrees Celcius and 130mL of water at 95 degrees C. what is the final temperatue of the mixture?
A solution of phosphoric acid was made by dissolving 10.0g H2PO4 in 10.0 mL of water. The resulting volume was 104 mL. Calculate density, mole fraction, molarity, and molality of the solution.
Lakes that have been acidified by acid rain can be neutralized by liming, the addition of limestone (CaCO3 ). How much limestone in kilograms is required to completely neutralize a 3.8 x109 lake with a pH of 5.5.
When 7 mL of a solution containing 3 M KNO3 is diluted to 21mL, a dilute solution is formed. What is the NO3- concentration in 10mL of the dilute solution?
a main component of photochemical smog. Classify this reaction as a synthesis, decomposition, single-displacement, or double-displacement reaction.
how much energy is required to vaporize 98.6 g of ethanol at its boiling point if its Hvap is 40.5 kj/ mol ?
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