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What volumes of 0.53 M HNO2 and 0.59 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.41?
platinum crystallizes with a face-centered cubic unit cell. the radius of a platinum atom is 139 pm. calculate the
State whether each of the following experimental errors would raise or lower the mass of the recovered product:
Calculate the minimum amount of work that must be done to remove 100 J of heat form the inside of the refrigerator, when inside the temperature is -80 C
The work function of silver is 7.59x10^-19J. what is the longest wavelength of electromagnetic radiation that can eject an electron from the surface of a piece of silver
The buret continues to drain, slowing gradually until coming to a complete stop, as depicted on the right side. At that moment, the total pressure of the gases inside the flask just equals the total pressure of the atmosphere plus the additional p..
500 ml of 0.150m sodium hydroxide is mixed to 595 ml of 0.200m weak acid determine nbspthe ph of the resulting buffer
An ionic compound contains only a metal, M, and bromine. If analysis indicates that a 3.61 g sample of the compound contains 2.44 g of M, what mass of Br in g is contained in 344 g of the mineral
When the reaction A--> B + C is studied, a plot of [A]t vs. time gives a straight line with a negative slope. What is the order of the reaction
if the barometric pressure is 784 torr and the experiment is carried out at 25 oc what is the pressure of the gas
The student adds 6 M NH3 to CuSO4 solution until the Cu 2+ ion is essentially all converted to Cu(NH3)4 2+ ion. The voltage of the cell goes up to 0.92 V and the Cu electrode is still negative. Find the residual concentration of Cu 2+ ion in the c..
An analysis shows that you need to neutral 3.27 meq/100gof acidity. How much of finely ground pure CaCO3 (in grams) is required to neutralize the acidity of this soil?
Balance the following electrochemical equation for an acidic environment. HCl + Al3+ ? ClO41- + Al
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