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You have 100 mL of a 0.15 M solution of NaH2PO4. How many grams of Na2HPO4 must you add if you want to make a buffer solution for which the pH equals the pKa of H2PO4-?
Explain how many grams of aluminum oxide will be produced if we react 30.0g of Al with 25 g of oxygen gas. State and balance chemical equation first
1.00g sample of water is allowed to vaporize completely in a 10.0l container. what is the pressure of the water vapor
If cAMP concnetration increases what happens to each of these pathways in the liver? Name the critical enzyme that becomes phosphorylated (not necessarily by PKA) that effects the flux through the pathway
An ideal gas mixture containing 65.0 mol% carbon dioxide and 35.0 mol% nitrogen monoxide is to be prepared by allowing gaseous carbon dioxide to fill an evacuated 30.0 L cylinder to a pressure of 2.15 bar. The temperature is 415 K.
Consider the autodissociation of water as the behavior of an Arrhenius acid. Use this to explain the temperature dependence of the autoionization of water
Calculate the pH of each of the following solutions ( Ka and Kb values are given in Appendix D in the textbook). 0.115 M hydrogen chromate ion (HCrO4^-).
2NO (g)+ Br2 (g) yields 2NOBr (g) What is the rate of disappearance of Br2 when [NO]= 5.9×10-2 M and [Br2] = 0.26 M
The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)? Assume that there is no volume change when the Cu(NO3)2 is add..
What is the molecular geometry of a molecule that has three bonding and two non-bonding domains?
if solubility of a particular solute is 10g100g h2o at 20 degrees c which of the following solution concentrations
Describe how you would prepare 500 mL of 1.75 M HCl solution starting out with an 8.61 M stock solution of HCl.
Using 80.0g of Methane and 16.3g of Water, how many liters of H2 can be produced at STP? What is the limiting reactant?
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