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How many grams of Cu(OH)2 can be produced from the reaction of 0.500 g Cu with 30.0 mL of 3.0NaOH? Which reactant is the limiting reagent?
If only 0.580g Cu(OH)2 was isolated from the above mixture, what is the percent yield?
Benkart's Tie Store has fixed costs of $180,000. Tires sell for $75 each and have a unit variable cost of $30. What is Benkart's break-even point in units?
We do not have any gardening books, magazines, or access to the Internet (horrors!). We need to observe a number of characteristics for these plants. What are some of the characteristics that we want to observe. What might be your initial hypothes..
Question- A 2.69g sample of a substance suspected of being pure gold is warmed to 72.6C and submerged into 15.4g of water initially at 24.1C. The final temperature of the mixture is 26.6C.
A gas occupies 4.04 L at 860 torr and 10C. What volume will it fill if the pressure is changed to 731 torr and the temperature is raised to 43C
When 28 mL of a 430 mL stock solution containing 2.3 M AlCl3 is diluted to 114 mL, how many moles of Al3+ are in the new solution?
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, and 5.66 percent O. A solution of 1.00 g of this pheromone in 8.50 g of benzene freezes at ..
The rate of a chemical reaction is found to double when the temperature is raised from 298K to 308K. Determine the activation energy.
Stalactites--the long icicle, icicle like formations that hang from the ceilings of caves--are formed from recrystallizing minerals like calcite (calcium carbonate, CaCO3, 100.09 g/mol). The Ksp of calcium carbonate is 4.5 x 10^-9.
What are the formal charges on the sulfur (\rm S), carbon (\rm C), and nitrogen (\rm N) atoms, respectively, in the resonance structure that contributes most to the stability of the thiocyanate ion, \rm SCN^
Calculate the enthalpy of reaction at 490 K. You may assume that the heat capacity is constant, and corresponds to the value at 298 K. You may also assume that there are no phase changes in this system
What is the pH of the buffer that results when 11 g of NaCH3CO2 is mixed with 85 mL of 1.0 M CH3CO2H and diluted with water to 1.0 L? (Ka of CH3CO2H = 1.8 ´ 10-5)
The first ionization energy of magnesium is greater than the first ionization energy of calcium. Explain. The first ionization energy of nitrogen is lower than the first ionization energy of oxygen. Explain.
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