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what is the pH of a buffer system in which the relevant pKa is 5.0 and there is an acid/base ration of 2?
Consider a case where methyl tertiary butyl ether (MBTE) is to be added to the conventional gasoline. What percentage of MBTE would be required to achieve the 2.7
How would you calculate the pH of a mixture made from adding 20.0 g of NaCH3CH2COO and 20.0 g of CH3CH2COOH to 100.0 mL of 0.10 M HCl.
Draw the pictures of the overlap of the atomic orbitals to make all of the molecular orbitals and for any non-bonding orbitals as well.
If 0.628 moles of a substance weighs 77.3 g, what is the molar mass of the substance, in units of g/mol?
Suppose 10.0 g of CH4 is used in a reaction that can theoretically produce 95.8 g of CCl4. What is the percent yield of CCl4 if the reaction produces only 80.0 g of CCl4.
Suppose 5.00g of Ca is added to 50.0mL of 1.00M HCL. Determine the limiting reactant in this case and number of moles of calcium actually consumed.
How many grams of acetone are in 1078 mL of a 4.01 M aqueous solution of acetone. The formula for acetone is C3H6O
In the reaction below, 3.84 atm each of H2 and Cl2 were placed into a 1.00 L flask and allowed to react: H2(g) + Cl2(g) 2 HCl(g) Given that Kc = 62.1, calculate the equilibrium pressure of HCl.
What is the virial pressure of 0.693 moles of O2S gas at 350K in a 1000 cm3 container, given B = -7 cm3mol1-? atm (Report to 2 significant figures.)
The normal boiling point for H2Se is higher than the normal boiling point for H2S . This can be explained by larger dipole-dipole forces, larger dispersion forces, and larger hydrogen-bond forces for H2Se
Determine hydroxyl and hydrogen ion concentration in this solution. (if Ka for ammonium ion = 5.0 x 10^-10.)
The following table lists molar concentrations of several ions in seawater. Using a density of 1.022 g/mL for seawater
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