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What is the concentration of Cu2+ in the following cell at 25 degrees C if the cell voltage is 0.955V?
Zn 0.125M Zn2+ ?M Cu
Cu2+ +2 e- ---> Cu(s) E0 cell= 0.340 V
Zn2+ 2 e- ---> Zn(s) E0 cell= - 0.763 V
a)0.6 M
b)1x10 ^ -2
c)1x10 ^ -6
d) 9x10 ^ -4
e) none of these
At a Concentration of 1M, the weak acid HN0 is 2% ionized and the pH of the solution is 1.7 . What happens when KNO2(s) is dissolved into the solution: The extent of HNO2 ionization = Increases or decreases? The concentration of H+ = Increases or ..
An experiment requires 42.0 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder.
Pressure of 0.923 atm is allowed to expand at constant temperature until its pressure reaches 0.377 atm. What is its final volume?
How many magnesiun atoms are in 3 moles of Mg3(PO4)2? 2) A substance, NxOy has the composition by mass 69.57% O. Calculate the molecular formula of this substance if its molecular mass is 92 grams.
Draw the two possible products of the reaction between benzaldehyde and ethylpropylketone
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Determine whether each of these species follows the octet rule, is octet deficient (central atom works with less than eight electrons in its valence shell), or has an expanded octet (central atom works with more than eight electrons in its valence..
The pressure of 4.57 L of an ideal gas in a flexible continer is decreased to one-third of its original pressure, and its kelvin temperature is decreased by one half
Nitartion of ferrocene not possible why, Ferrocene cannot be nitrated using the conventional HNO3-H2SO4 mixed acid conditions, even though nitration is an electrophilic aromatic substitution reaction. Explain.
Draw a detailed mechanism for the formation of 1,4-di-t-butyl-2,5-dimethoxybezene from t-butyl alcohol.
A gaseous mixture of O2 and Kr has a density of 1.102 g/L at 420 torr and 300. K. What is the mole percent O2 in the mixture?
At what angle (in degrees) does first-order diffraction from layers of atoms 169.1 pm apart occur, using x rays with a wavelength
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