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Calculate the pH when 4.73 g of HCOONa is added to 211.0 mL of 0.50 M formic acid, HCOOH. Ignore any changes in volume. The Ka value for HCOOH is 1.8 x 10-4.
Lead(II) phosphate, Pb3(PO4)2 (s), is allowed to come to equilibrium with its ions in otherwise pure water. Ksp = 3.0 x 10?44. Calculate the equilibrium concentration of each ion.
Identities of the components in a mixture by Gas chromatography may be determined by the technique called "spiking". Suppose you had run a chromatogram of your product and then deliberately added a known sample of 2 methyl 2 butene
the neutralization of HCL with NaOH at 25 degrees celsius is -79.9 kj/mol. Calculate the equilibrium constant for the reaction.
Write a net ionic equation for the precipitation reaction, if any, that occurs when aqueous solutions of the following ionic compounds are mixed. Cu(Ch3COO)2 and Na3PO4.
If I burn 0.315 moles of hexane (C6H14) in a bomb calorimeter containing 5.65 liters of water, what's the molar heat of combustion of hexane is the water temperature rises 55.4 ºC? The heat capacity of water is 4.184 J/g ºC .
How many grams of oxygen are collected in a reaction where 222 mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr?
What is the volume percent of a solution prepared by dissolving 34 g of NaOH in enough water to make a final volume of 120 mL? Show your work. part b: How many mL of a 10% solution can be made from the solution in part a
It is 2734 mi between Phoenix, Arizona, and Philidelphia, Pennsylvania. What is this distance in km?
A buffer is prepared by adding 1.50X 10^2 ml of 0.250 M NaOH to 2.50X10^2 ml of 0.350 M weak acid, HB. The solution is diluted to 1.00 L. If the pH of the resulting solution is 6.55, what is the pKa of the weak acid
In hydrogen bonding does the Hydrogen have to be connected to an O, N or F in its own molecule and be bonded to a O, F or N with another hydrogen
Methylated lidocaine, Lidocaine is thought to bind to receptors in its methylated form. Identify in writting the atoms or groups in the compound that could be involved in its binding to a receptor via- hydrogen bonding an ionic interaction
What is the maximum body accumulation of methylmercury at a constant ingestion rate of 4 mg of mercury per day?
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