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Define Carborundum (SiC) is a hard substance made by combining silicon dioxide with carbon(C) as follows- SiO2(s)+3C(s) = SiC(s) + 2CO(g). Define what mass of SiC is formed from the complete reaction of 4.8 mol of carbon?
What is the molarity of an HCl solution if 22.3 mL of the solution is required to react with 0.266g of Na2CO3?
Summarize the 5 different changes of matter according to the graph solid to gas. explain in detail how each state occurs. you must include terms in which desribe the state.
if you burn 10.00g of octane. if the temperature is 500K, and you have an expansion of 1.00 atm, how much work in joule can be done by the system if the octane is completely converted to CO2 and water vapor. what will be the enthalpy change
assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts heat capacity(s) 37.7 jmolk
determine whether a solid forms when solutions containing the following salts are mixed. if so write the net ionic equation for the reaction. a)Na3PO4(aq) and AgNO3(aq). b)K2SO4(aq) and Na2CO3(aq). c)Pb(NO3)2(aq) and Na2CO3(aq). d)BaCl2(aq) and KO..
an argon ion laser puts out 5.0 w of continuous power at awavelength of 532 nm. the diameter fo the laser beam is 5.5
Calculate the minimum concentration of Cr3+ that must be added to 0.095 M NaF in order to initiate a precipitate of chromium (III) fluoride ( for CrF3, Ksp = 6.6 X 10^-11)
What is the decay constant for iodine-131? It decays by beta emission with a half-life of 8.04 days.
if you look up the melting point of phenylsuccinic acid you will find it to be 167-169 degree. your product probably
A solution is prepared from 25.0g of benzene, c6h6 and 25.0g of an unknown compound. The freezing point of this solution is 4.3C. The normal freezing point of benzene is -5.12C/m. Determine the molar mass of the compound.
Explain why f-f transitions in the electronic spectra of lanthanide complexes are weaker than d-d transistions in the corresponding spectra
Explain what is the expected emission wavelength for a Li 2s1 to Li 2p1 transition. Define what color does this correspond to
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