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Water and 8 mol/L potassium nitrate solution are mixed to produce 700mL of a solution with a concentration of 6.mol/L. What volumes of water and potasium nitrate are used.
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20.2 g of an unknown molecular solute is dissolved in 5.65 moles of aniline (C6H5NH2), causing the boiling point of aniline to increase by 3.79 °C. Calculate the molar mass of the solute. For aniline, the molar mass is 9 ...
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Give an example of when heat is released from water as it undergoes a change of phase.
How many grams of nitrogen are found in 50.0 grams of potassium nitrate?
1. 2Cr(OH) 3 + 3Br 2 + 10OH - 6Br - + 2CrO 4 2- + 8H 2 O In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent. 2. A tank ...
Why do the instructions call for using a saturated solution of NaOH rather than one at lower concentration? Why can we ignored in the calculation of the concentration of NaOH?
At a given pressure and temperature, it takes 198.7 sec for a 2.6 L sample of Kr to effuse through a porous membrane. How long does it take for 2.6 L Ar to effuse under the same conditions?
A 3.15- sample of NH4NO3 is introduced intoan evacuated 2.26- L flask and then heated to 245 C. What is the total gas pressure, in atmospheres, in the flask at245 C when the NH4NO3 has completely decomposed?
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