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When heated 8.17 g of a salt of hydrated magnesium chloride MgCl2. xH2O, where x represents the number of moles of H2O per mole of MgCl 2, you lose all the water of hydration, leaving 2.50 g of MgCl2. Determine the value of x.
does the HCl ionize the NH3 base? is the a conjugate acid or base, HCl is a strong acid, what happens when a strong acid and weak base are mixed?
Calculate the work (in kJ) when 1.70 moles of hydrogen gas are produced from the reaction of sodium in excess water at 298 K
This indicates that the solution is now more acidic, and the reaction shifts to the right, working to lower the concentration of hydrogen ions, and return to equilibrium
the photosynthesis reaction is 6co2g6h2og-gt c6h12o6s6o2g. if the reaction requires 2.823 kjmole of c6h12o6 formed how
What is the pH when 5.00 mL of base has been added. What volume is required to get to the first midpoint
What is the expected boiling point of a solution prepared by dissolving 5.83 g of sodium iodide (NaI) and 59.2 g of water (H2O)? For water, Tb=100.00C and Kb=0.512C*m^-1.
Some physical properties of water are shown below. freezing point 0.00°C boiling point 100.00°C Kf 1.86°C/m Kb 0.512°C/m What is the freezing point of a solution of calcium chloride that contains 26.0 g CaCl2 dissolved in 330. g of water
Calculate the final concentration of a sodium hydroxide solution prepared by adding 10.00mL of 5.325M sodium hydroxide stock solution into a 250.00mL volumetric flask and then filling to the mark with de-ionized water.
Write a balanced net ionic equation for the following dissolution reaction: Zn(OH)2 in aqueous NH3 to form Zn(NH3)4 2+
A bottle of wine consists of an 11 weight percent solution of ethanol (C2H5OH) in water. If the bottle of wine is chilled to -20oC, will the solution begin to freeze? Kfp for water is 01.86 oC?m-1
solution of water (K_f}=1.86 C/m) and glucose freezes at - 2.35 C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 C.
Explain how to correct for the partial of water vapor when calculating the partial pressure of a dry gas is collected over water?
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