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What is the theoretical yield of vanadium that can be produced by the reaction of 40 g of V2O5 with 40 g of calcium based on the following chemical reaction? V2O5(s) + 5Ca(l) yields 2V + 5CaO
Use this equation to calculate the wavelength of the photon emitted in units of nanometers for the following transitions.
An industrial wastewater contains 2000 mg/L of total Ammonia as N, 490 mg/L of total Ni and has no inorganic carbon. The PH = 2.8. Using the diagram calculate to what pH the waste must be adjusted to so that the total Ni concentration is 1 mg/L.
Suppose the radius of an atom in a body-centered cubic unit cell is 0.35 nm. What is the edge length of the unit cell in nm.
what is the mole fraction of magnesium chloride in a solution prepared by adding 15 grams of magnesium chloride
Draw all of the Lewis structures of NO2+ which obey the octet rule and use this Lewis structure or these resonance structures to predict how many covalent bonds connect each oxygen atom in the real structure to the central N atom.
a large weather balloon filled with helium as a volume of 7.00 x 102 l at stp. which expression should be used to find
The specific heat capacity of silver is 0.24 J/°C · g. (a) Calculate the energy required to raise the temperature of 160.0 g Ag from 273 K to 295 K.
FireFlies flash at a rate that depends on temperature. At 29 C the average rate is 3.3 flashes every 10 seconds;at 23 C the average rate falls to 2.7 flashes every 10 seconds.
The methyl benzoate and acetanilide react with HNO3, H2SO4, and glacial acetic acid. Need to know the possible products and then the one that actually forms.
The enthalpy of combustion of n-Butanol, and the enthalpies of formation of CO2(g) and H2O(l), are shown below. Use the information given to calculate the enthalpy of formation of n-Butanol
Biological systems usually work at 65% efficiency. How many mL of ethanol can you obtain from the fermentation of 0.65 lbs of sucrose
What radioactive isotope emits a beta particle to give magnesium-24? a. sodium-24 b. silicon-28 c. aluminium-24 d. magnesium-25
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