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Wastewater from a cement factory contains a 0.25g of Ca2+ ion and 0.056g of Mg2+ ion per 100.0 L of solution. The solution density if 1.001g/mL. Calculate the Ca2+ and Mg2+, molarity, molality, mol fraction, and the PPM. Please show examples.
When heated, all metallic hypochlorites decompose and produce oxygen. Considering this, what happens when the decomposition reaction occurs at an incident involving fire? Please reference your answer and tell me why.
Each molecule can also be in one of two orientations. What is the entropy of this system of molecules in boxes with two possible orientations.
What is the percent yield of a reaction in which 228. g phosphorus trichloride reacts with excess water to form 118 g HCl and aqueous phosphorus acid (H3PO3)?
hydrogen and nitrogen have different molecular weights, so mass fractions will be different than mole fractions.
Calculate the amount of heat liberated (in kJ) from 437 g of mercury when it cools from 61.0°C to 12.0°C.
An electron is confined to a one dimensional box of length L. It falls from the second energy level to the ground state, and releasee a photon with a wavelength of 322 nm
What is the most common oxidation state of the chalcogens compared to the halogens? What is an explanation for the difference?
A glucose solution contains 51.0 g of glucose in 475 g of water. What is the freezing point?
draw the mechanism for the ammonolysis of benzoyl chloride
If the methane contained in 2.00 L of a saturated solution at 25 degrees C was extracted and placed under STP conditions, what volume would it occupy.
What is the mass of platinum required to solidify all the gold? What is the change in entropy of the system? Cp(Pt, s) = 25.86J/mol*K ?H?fus(Au, s l) = 12550J/mol
An excess of NaOH is treated with 1.1L of dry HCl gas (measured at STP). What is the weight of NaCl formed?
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