How many ounces of bronze are needed
A sculptor has prepared a mold for casting a bronze figure. The figure has a volume of 245 mL. If bronze has a density of 7.8 rm {g/mL}, how many ounces of bronze are needed in the preparation of the bronze figure?
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Why is it organized in this way? Why is the presence of ozone in the stratosphere important to us? Why does the presence of CFC"s in the stratosphere interfere with this process?
Determine the number of chloride ions in 11.73 g of magnesium chloride.
Hydrazine derivatives are commonly used in rocket fuels. Combustion of N2H4 produces N2(g) and H2O(g). When 1.00 g of N2H4 is burned in a bomb, DT = 3.51 oC. If C = 5.51 kJoC-1, what is the quantity of heat evolved? What is DH of this reaction?
Lucy has $900,000 to invest and she wants a portfolio beta of 1.2. The S&P 500 has an expected return of 18% and the standard deviation is 30%. The risk-free return is 5%. She plans to put her money in the S&P 500 and T-bills. What is the
The activation energy, Ea, for this reaction is 260 kJ/mol. At 800 K, the rate constant k = 0.0315 s-1. Determine the value of k at 850 K.
Lucite is 71.4% carbon, 9.59% hydrogen, and 19.01% oxygen. What is the empirical formula for Lucite?
A first order reaction has k = 0.440 min-1 and the initial concentration of reactant is 0.840 M. What is the concentration of the reactant after 1.00 minute?
If 7.00 mol calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2) will be produced?
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The final historiographical essay requires that you write a 1250-1500 word research essay about a significant work of United States history written before