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Using data from appendix D, calculate [OH-] and pH of a mixture 0.10 M in NaNO2 and 0.20 M in Ca(NO2)2
An environmental engineer tells you that adjusting the pH to 8.5 will decrease total soluble Cr(III) to below 1 mg/L (1.92 x 10-5 M). Is this true? In other words, is the solubility of Cr(III) in the presence of Cr(OH)3(s) at a pH of 8.5 ? 1 mg/L.
2Al(s)+2KOH(aq)+6H2)-->2KAl(OH)4(aq)+3H2(g) If you place 2.05 g of aluminum in a beaker with 185 ml of 1.35 M KOH, will any aluminum reamin. What mass of KAl(OH)4 will be produced
A fixed quantity of gas at 22 deg C exhibits a pressure of 754torr and occupies a volume of 5.52L . Calculate the volume the gas will occupy if the temperature is increased to 175 deg C while the pressure is held constant.
Derive an equation for the temperature dependenc of the vapor pressure of a liquid (analogous to the integrated form of the Clausius. Clapeyron equation) assuming that the vapor has the equation of state PV=RT+M where M is a constant.
How many mL of 5.0 M NaOH can be added before its buffering capacity is exhausted?
calculate the work in kj when 3.00 moles of hydrogen gas are produced from the reaction of sodium in excess water at
Based on understanding of enthalpy, what is the sign of dH for the binding of Cu2+ to soil. Explain.
Is it true that Ksp is an equilibrium constant that can be used to express quantitatively the extent to which a compound dissolves
When a sample of HI(g) (0.1192 mol/L) is placed in 110.0 L reaction vessel at 968.0 K and allowed to come to equilibrium the mixture contains 0.02028 mol/L of H2(g). What concentration (mol/L) of HI(g) reacted? 2HI(g) = H2(g)+I2(g)
Draw Fisher projections for the following: (a) (R)-2-chloropentane; (b) (2R,3S)-2,3-dichlorobutane; (c) (S)-2-Bromo-2-pentanol;
A solution of ammonia and water contains 4.50×1025 water molecules and 5.30×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
When CuCN is used in the Sandmeyer reaction, the preparation is generally carried out in a neutral medium. Can you offer an explanation of why this is done?
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