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While 7.24 moles of magnesium as well as 3.86 moles of oxygen gas react to form magnesium oxide, which reactant will be leftover? Explain how much of the excess reactant will remain?
This has to do with balancing the reaction equation however I can't seem to get the answer in the book of .24 moles ofO2.
For the synthesis of an insoluble salt (such as SrCl2 and Na2SO4, to get SrSO4) what are some reasons why percent yield may be greater than 100%? Lower than 100%?
A radioactive sample contains 1.85 g of an isotope with a half life of 3.5 days. What mass of the isotope will remain after 5.8 days. (Assume no excretion of the nuclide from the body) M=?
An adiabatic turbine expands steam from 500oC , 3.5 MPa to 200oC and 0.3 MPa. If the turbine generates 750 kW, what is the flow rate of steam through the turbine
caffeine c8h10n4o2 is a stimulant found in coffee and tea. if a solution of caffeine in chloroform chcl3 as a solvent
Name a compound with the formula, C5H12, which will show only one peak in the NMR spectrum.
what spontaneous reaction will occur in aqueous solution among the ions Sn4+, Sn2+, Co3+, and Co2+ ? What will be the E°cell for this reaction?
If 6.73 g of Na2CO3 is dissolved in enough water to make 250 mL of solution, what is the molarity of the solution? What is the molarity of the Na+ ions
question 1 the variation of emf for the cell below with temperature is shown in the graph below.nbspzns zncl2 aqueous
In a coordination compound, which ion would you expect to have a higher coordination number with a bidentate nitrate group (NO3-), Co3+ or Ir3+? Why?
Calculate the pH of a solution prepared by mixing 20.5mL of a 0.500M sodium fluoride solution with 32.5mL of a 0.750M hydrofluoric acid solution.
Calculate the pH and the concentrations of all species present in a 0.19-M solution. The acid dissociation constants are K1 = 5.9 10-2 and K2 = 6.4 10-5.
When electrical current of unknown magnitude is run through the device for 4.00min , 13.1mL of water-saturated H2(g) is collected. The temperature and pressure of the system are 25C and 715torr. A. How many moles of hydrogen gas are produced
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