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When a solution of KI in water is 0.250M. Explain how much water must be added to 50.0 mL of this solution to decrease the concentration to 0.100M?
A. 25 mL B. 50 mL C. 75 mL D. 125 mL
Suppose that a fully charged lead-acid battery contains 1.50 of 5.00 . What will be the concentration of in the battery after 2.50 of current is drawn from the battery for 8.50
Suppose a system of three particles, represented by circles, have the possibility of occupying energy states with 0, 10, or 20 . Collectively, the particles must have 30 of total energy. One way the three particles can distribute themselves is sho..
Write the ground-state electron configurations for the following elements. (Type your answer in noble gas notation using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2.)
For the reaction: H2SO4(aq) + 2 KOH(aq) --> K2SO4(aq) + 2 H2O To find the concentration of H2SO4, a 25.00 mL sample was titrated with 0.8752 M KOH. It took 31.79 mL of KOH to reach the endpoint of the reaction. What is the concentration of the H2S..
The heats of reaction for the following combustion reactions were determined experimentally
Crystalline potassium bromide has a rock salt structure and a density of 2.75 g/cm^3. Calculate its unit-cell edge length.
If this energy were used to vaporize water at 100 C , how many grams of water could be vaporized. The heat of vaporization of water at 100 C is 40.7 kJ/mole
How much heat is required to raise the temperature of a 464g of lead from -20.0C to 219C
When Calcium Hydroxide is mixed with sodium phosphate, calcium phosphate precipitates out of solution. If 4.12 grams of calcium hydroxide is mixed with 5.02 grams of sodium phosphate in 500 mL of water
The equilibrium constant for the reaction of carbon and water to form carbon monoxide and hydrogen is .20 at 1000 degrees C. If an equilibrium mixture contains solid carbon, 0.40 M H2O and 0.40M CO, what is the concentration of H2
Calculate the theoretical yield of C2H5Cl when 138 g of C2H6 reacts with 244 g of Cl2, assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
A buffer that contains 0.255 M of acid, HA and 0.153 M of its conjugate base A-, has a pH of 3.39. What is the pH after 0.0115 mol of NaOH are added to 0.666 L of the solution
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