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How much heat is gained by copper when 51.8 g of copper is warmed from 15.5*C to 76.4*C? The specific heat of copper is 0.385 J/(g x *C)
What mass percent of ethylene glycol in water must be used to reduce the freezing point of the mixture to -5.0degrees c?
The outdoor concentration of radon is 1 pCi/L. Develop a mass balance for this problem and estimate the steady-state radon concentration in the crawl space (in pCi/L).
A 0.140-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium? Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
when perfoming a distillation some of the material will vaporize but will not collect in the reservoir of the Hickman head
The self-amplifying reaction in which neutrons produced by the fission of one nucleus would induce fission in other nuclei is called
describes the chemical change. what about for a solution of calcium chloride and a solution of mercury (I) nitrate
Ethanol (molar mass = 46 g/mol) can be dehydrated to yield ethene (molar mass = 28 g/mol) by heating it with an excess of concentrated sulfuric acid (acting as a catalyst).
Pheromones are compounds secreted by the females of many insect species to attract males. One of these compounds contains 80.78 percent C, 13.56 percent H
Propose a reaction sequence for the conversion of benzoic acid into phenylacetic acid. No need for mechanisms
The lattice energies of FeCl3, FeCl2, and Fe2O3 are (in no particular order) -2631 kJ/mol, -5339 kJ/mol, and -14,774 kJ/mol. Match the appropriate formula to each lattice energy.
A 75.0-mL volume of 0.200 NH3 is titrated with 0.500 M HNO3 . Calculate the pH after the addition of 19.0 mL of HNO3
an auto mechanic spills 83mL of 2.6M H2SO4. How many milliliters of 1.2M of NaHCO3 must be poured on the spill to react completely with the sulfuric acid?
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