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Suppose you have two joined metals (Gold and Copper(II)) immersed in 1 M HCl acid, based on the reactants present write possible half cell (anode/cathode) and full cell reaction(s).
What is the final temperature in a squeezed cold pack that contains 50.0 g of NH4NO3 dissolved in 135 mL of water?
Treat 250.0 g of Ca3(PO4)2 with 150.0 g of H2SO4. How many grams of superphosphate could be formed?
Determine the solubility of N2 in water exposed to air at 25 C if the atmospheric pressure is 1.2 atm. Assume that the mole fraction of nitrogen is 0.78 in air and the Henry's law constant for nitrogen in water at this temperature is 6.1 10-4 M/at..
calculate the average rate of disappearance of A for each 40-s interval, in units of mol/s. c.) what additional information would be needed to calculate the rate in units of concentration per time?
a hypothetical element has two stable isotopes one has a mass of 106.9051 amu with an abundance of 48.183% the other isotope has a mass of 108.9048 amu with an abundance of 51.825% what is the average atomic mass of this element
C2H4+3O2= 2CO+2H2O if 2.70 mol C2H4 is reacted with 6.30 mol O2 a. identify the limiting reagent
Calculate the change in its standard molar Gibbs free energy when benzene is heated from 25 ºC to 45 ºC.
What is the equilibrium expression for the following reaction. Please interpret as an equilibrium symbol.
Suppose that 28g of each of the following substances is initially at 28.0 degrees celcius. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
Given the following pairs, if used in an electrolytic cell which would be the cathode and which would be the anode
a small amount do aqueous ammonia is added to a Cd^2+ solution and a precipitate forms. Write the equation for this reaction.
Lead(II) sulfide reacts with hydrogen peroxide to form lead(II) sulfate and water. How many grams of hydrogen peroxide (H2O2) are needed to react completely with 265 g of lead(II) sulfide
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