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A student carefully diluted 25.0 mL of 6 M NaOH solutionin 475 mL if distilled water. Calculate the molarity of the diluted solution of base. Also, explain why this diluted NaOH solution can not be used as a standard solution of base.
56.9 mL of water is added to 24.9 mL of 0.125 M KOH solution. What is the new molarity?
If the total pressure in the flasks is 311 torr after the stopcock is opened, determine the initial pressure of N2 in the 1.00 L flask.
Assuming that at low pH the principle species in solution is HA and at high pH the principle species is A-, calculate the pKa of the indicator.
nitrogen and hydrogen form the compound NH3 how many hooks would dalton put on the nitrogen atom to explain this compound?
Chemicals available for crystallization: ethyl ether, 95% ethanol, methanol, isopropyl alcohol, aceton, hexane, toluene and methylene chloride.
10.0 mL of a 0.30 M sodium phosphate solution reacts with 20.0 mL of a 0.20 M lead(II) nitrate solution (assume no volume change). What is the concentration of nitrate ions left in solution after the reaction is complete
The density of water at room temperature is less than the assumed 1.0 g/mL used in the calculations for determining the enthalpy of neutralization. How will this small (but real) assumption affect the reported enthalpy of neutralization for the st..
If carbon dioxide gas is collected over water at 25 °C and 775 torr, what is the partial pressure of the CO2? The vapor pressure of water at 25 °C is 23.8 torr.
multiple choice questions in nuclear chemistry.1. magnesium-28 decays via beta emission which equation represents the
The mass of an atom of beryllium is 1.5 x 10^-26 kg. How many beryllium atoms are present in beryllium film of mass 0.37 g used as a window on an x-ray tube
Which of the following is a neutralization reaction?
What is the pH of a solution that is 0.29 M in acetic acid, HC2H3O2, and 0.74 M in sodium acetate, NaC2H3O2, at 25°C? Ka of acetic acid is 1.8 × 10-5.
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