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Write the net ionic equations that occur in the following cells: a. Pb|Pb(NO3)2||AgNO3|Ag Pb + 2Ag+ --> Pb2+ + 2Ag b. Zn|ZnCl2||Pb(NO3)2|Pb Zn + Pb2+ --> Zn2+ + Pb c. Pb|Pb(NO3)2||NiCl2|Ni Pb + Ni2+ --> Pb2+ + Ni
what is the volume change when 2 kg of water at 6.8 MPa and 93 Celsius expands to 1.6 bar
Tween-20 is a detergent that is often used in immunological assays. Concentrated Tween-20 a viscous liquid and is difficult to accurately pipette in small amounts. Because of thism it is common to make a 10% stock of Tween 20 i nwater and use this..
a 130g piece of metal is heated to 286C and dropped into 87.0g of water at 26C, if the final temperature of the water is 58.3C.
When doing a recrystallization, why is it important to allow the saturated solution to boil for ~1 minute and cool SLOWLY to room temperature before placing it in an ice-water bath?
The convention of arbitrarily assigning a zero enthalpy value to all the most stable elements in the standards state and (usually) 298 K is a convenient way of dealing with the enthalpy changes of chemical processes.
Calculate the number of grams of NO2( molar mass=46.01 g/mol) gas inside a .500 L container at STP.
a saturated solution of nickelii sulfide contains approximately 3.6 multiplied by 10-4 g of dissolved nis per liter at
a box contains a mixture of small copper spheres and small lead spheres. the total volume of both metals is measured by
for the reaction a --gt b the activation energy is ea 125 kjmol and the heat of reaction h 50 kjmol. what is ea for
What are the equilibrium concentrations of each reactant and product? (All three substances are gases at 250 °C)
This cAMP activates an enzyme phosphorylase that splitsglycogen, releasing glucose that is rapidly metabolized, replenishing the ATP supply.Devise a model of this control loop and determine conditions under which theproduction of ATP is oscillator..
What is the wavelength (in nm) of photons which have energies of 895 kilojoules per mole
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