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Question: How do you solve this, " How many ml of .2M acetic acid are mixed with 13.2 mL of .2 M sodium acetate to give a buffer with pH=4.2?"
How many grams of ethylene glycol (C2H6O2) must be added to 1.15 kg of water to produce a solution that freezes at -4.82 degrees celsius
A sample of 1.43 g of helium and an unweighted quantity of O2 are mixed in a flask at room temperature. The partial pressure of helium in the flask is 42.0 torr, and the partial pressure of oxygen is 159 torr.
if 105 of fluorine-18 is shipped at 800 a.m. how many milligrams of the radioisotope are still active if the sample
Compare the acid or base strength of the following compounds and explain your ordering by explaining in terms of the difference in the structure.
draw the lewis dot structures for ammonia and for the ammonium ion. write the net ionic equation for the conversion of
When a solution of hydrogen peroxide (H2O2) is put on a cut, bubbles, producing water and oxygen gas according to the following equation:
Calculate the concentrations of C2H2O4, C2HO4, C2O42-, and H+ ions in a 0.19 M oxalic acid solution.
Calculate the change in internal energy, u2-u1 in kJ/kg of Oxygen (O2) when the temperature of the gas is increased from 250K to 800K. Assume a constant specific heat. Use table A-20 to determine an appropriate value of the specific heat.
a turbine operates by the impact of a high velocity jet of steam against the turbine blades. The steam leaves the turbine at a lower velocity. For the turbine depicted, steam from a high pressure nozzle enters the air and strikes the blades of a t..
the frequency factor a is 8.7x 10 12 s- and the activation energy is 63 kj/mol, What is the rate constant for the reaction at 75C
if .150mole of nonvolatile nonelectrolyte solute is dissolved in 800 gramsof water what are the ideal melting point and
List all of the intermolecular forces in each of the following substances: CH3NH2, CO2, SO2, NO2
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