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Calculate the pH of the buffer system if 2.00 moles of H3PO4 and 1.00 mole of NaH2PO4 are present in 1.00L of a solution
The _______ of a titration occurs when the indicator changes color.
Calculate the molar solubility of silver thiocyanate, AgSCN, in pure water and in water containing 0.010 M NaSCN.
What is the empirical formula of ascorbic acid, given that the pseudoformula is C3.41 H4.53 O3.41
You are given solutions of HCl and NaOH and must determine their concentrations. You use 30.6 mL of NaOH to titrate 100. mL of HCl and 18.0 mL of NaOH to titrate 50.0 mL of 0.0796 M H2SO4. Find the unknown concentrations.
What is the molar concentration of methanol in the mixture? Give answer in M, 2 significant digits, do not write down the units.
The lid is tightly sealed on a rigid flask containing 3.50 L H2 at 17 °C and 0.913 atm. If the flask is heated to 71 °C, what is the pressure in the flask?
A tank having a volume of 1000 ft3 contains 22 lb of CO2, 46 lb of O2 and 154 lb of N2. What pressure will be indicated by a pressure gage attached to the tank if the gas is at ambient temperature (80°F)
If 12800 calories is required to change 45g of substance X from a liquid to a gas, what is the heat of vaporization of substance X?
Identify the unknown gas - Find the molecular formula of the compound
benzoic acid and dissolve it in 1ml of diethyl ether. this is then extracted with 1 ml of water. the ether is removed, dried with sodium sulfate and ether evaporated yielding 30 mg of benzoic acid. what is the kp value for the ether water system.
A solution is made by mixing 45.0 mL of ethanol, C2H6O, and 55.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C
According to the mechanism below, what is the correct expression for the rate of consumption of A. In the mechanism, M is a molecule that collides with A and A* is a highly-energized form of A.
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