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How much heat is exchanged when 100g of solution with a specific heat of 3.93 Jg-1K-1 has an increase in temperature of 5.2oC?
Is the heat change in (1) endothermic or exothermic?
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What are Transition Metals and what specifically happens to transition metals that results in solutions that give off distinct colors?
What would an increase in the metal wire mass indicate when the metal wire starts to form copper on it from a chemical reaction from 6M HCl and copper (II) sulfate pentahydrate? What would a decrease in the metal wire ma ...
When 3.56 g of an unknown hydrocarbon was dissolved in 125 g of benzene, the freezing pointof the solution was found to be 4.41oC. Analysis of thehydrocarbon showed that it contained 93.71% carbon (by mass) and6.29% hydr ...
A sample of gas in a cylinder has an initial volume of 56.0 L , and you have determined that it contains1.60 moles of gas. The next day you notice that some of the gas hasleaked out. The pressure and temperature remain t ...
15 grams of NaCl is dissolved completely in a beaker containing 200mL of water. What is the Na+ concentration in moles/liter in the final solution?
A chemist must prepare 450. mL of 130. mM aqueous aluminum sulfate (Al2(SO4)3) working solution. He'll by pouring out some 0.452 mol/L aqueous aluminum sulfate stock solution into a graduated cylinder and diluting it wit ...
1. 2Cr(OH) 3 + 3Br 2 + 10OH - 6Br - + 2CrO 4 2- + 8H 2 O In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent. 2. A tank ...
What is the subshell electron configuration for the Ca20 atom? Which are valence electrons and how many valence electrons are there?
How do the colors seen by the naked eye compare to the emission spectra emitted by the flame
What is the mass of NaOH present in grams, given that a 100. mL solution has a concentration of 0.125 M?
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