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A sodium chloride crystal in a beaker. As water is added the salt dissolves into positive sodium ions and negative chloride ions. Hydration refers to the final state of this process such that the water molecules tend to orient around the ions. With the oxygen atom of the water pointing towards the positive sodium ions and hydrogen ions point towards the negative chloride ions. When the NaCL dissolves, the temperature of the solution decreases slightly. Based on this, the heat of solution of NaCL would be.
A. ZeroB. Small positive valueC. Large positive valueD. Small negative valueE. Large negative value
a boiler is used to heat steam at a brewery to be used in various applications such as heating water to brew the beer
Which value is closest to the pOH of a 0.30M solution of the weak base methylamine (CH_3_NH_2_). The Ka for the acid form of methylamine (CH_3_NH_3_+) is 2.27E-11.
What volume of pure O2(g), collected at 27°C and 746 torr, would be generated by decomposition of 114 g of a 50.0% by mass hydrogen peroxide solution? Ignore any water vapor that may be present.
Determine the pH of a 0.227 M C5H5N solution at 25°C. The Kb of C5H5N is 1.7 x 10-9.
If a solution containing 17.76 g of mercury(II) perchlorate is allowed to react completely with a solution containing 5.102 g of sodium sulfate, how many grams of solid precipitate will be formed.
A sample of zinc nitride, Zn3N2, contains 39.0 g of zinc. How many nitride ions are present
a 0.6447-g portion of manganese dioxide was added to an acidic solution in which 1.1402g of a chloride containing
Determine the molarity of a solution prepared by dissolving 4.50 mol of NH4Cl in sufficient water to make 2.00 L of solution.
Calculate the change in entropy when 25 g of ethanol at 50oC is poured into 70 g of ethanol at 10oC in an insulated vessel given that Cpm = 111.5 J/Kmol
A sample of sodium reacts completely with 0.568 (kg) of chlorine, forming 936 (g) of sodium chloride. What mass of sodium reacted
Provide simple instructions for preparing 1.00 L of a solution having pH = 7.00 at 298 K. Your instructions should include the volumes of the solutions required. (1b) What is the buffer capacity of the resulting solution.
Calculate the value of E°cell for a voltaic cell described in each of the following. Enter your answer with 3 significant digits. Enter scientific notation as 1.23E4
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