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Borax is used to standardize a solution of HCl. If 0.2334 g of borax requires 24.31 mL of HCl titrant, what is the HCl concentration?
the values of Hfo given in kJ/mol, calculate the value of ?Go in kJ for the combustion of 1 mole of propane to form carbon dioxide and gaseous water at 298 K.
At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2 is 0.0620 g/L what is the Ksp of this salt at this temperature
Describe the processes of fatty acid oxidation and synthesis in animal tissues, pointing out their similarities and differences
Construct a pie molecular orbital system for the nitrate radical (NO3), using the appropiate 2p orbitals. (b) what is the ground electronic state of this molecule?
A 10mL aliquot of this solution, diluted to 25mL, yielded a signal of .235 units. A second 10 mL aliquot was spiked with 10mL of 1ppm standard solution of the analyze and diluted to 25mL. The signal for the spiked sample was .502 units. What is th..
2 L of an unknown concentration of the weak base ammonia are standardized. 50.0 mL of the basic solution are titrated with 0.200 M HCl. The end point occurs after 71.0 mL of acid are added. What is the concentration of ammonia in the 2 L flask
Calculate the current (mA) required to deposit 0.89g of tungsten metal in 45 minutes from a solution of WO42-. (Atomic weight: W=183.8)
liquid nitrogen has a density of 0.807 g/ml at -195.8 C, if 1.00 L of N2 is allowed to warm to 25 C at a pressure
Suppose that the atomic mass unit (amu) had been defined as one-sixth of the average mass of an atom of fluorine instead of one-twelfth of the mass of an atom of carbon-12.
Calculate the mass defect and nuclear binding energy per nucleon of the each of the nuclides indicated below. A)Ti -48 (atomic mass = 47.947947 amu) mass defect = ______amu and Binding energy nucleon = ______MeV/nucleon
If you add a solvent called "dioxane" to water, a homogenous mixture forms. Dioxane and water have the same boiling point (100oC). How do you explain that the mixture of the two compounds shows a boiling point that is lower than the one found for ..
A C-C bond in ethane is free to rotate but a 'C=C' in ethene is not. Why? What will be the consequences of rotation of 'C=C'. Explain with appropriate orbital diagram
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