How much limestone in kilograms is required to neutralize
Lakes that have been acidified by acid rain can be neutralized by liming, the addition of limestone (CaCO3 ). How much limestone in kilograms is required to completely neutralize a 3.8 x109 lake with a pH of 5.5?
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Compound TACN contains three elements: carbon, hydrogen, and nitrogen. Combustion of 0.258 g of TACN yields 0.528 g CO2 and 0.270 g H2O. Determine the empirical formula of TACN.
A 5500 kg helicopter accelerates upward at 0.50 m/s^2 while liftinga 1200kg car. A. what is the lift orce exerted on the air by the rotors?
Explain the influence of attitudes on decisions people make and Assets modes of processing involved in persuasion (systematic and heuristic) and discuss the elaboration-likelihood model.
A mass of 1.50 g H2O is sealed in an evacuated 3.0-L flask and heated to 55 .C. What mass of liquid water remains in the flask when equilibrium is established? The equilibrium vapor pressure of water at 55 .C is 118 mm Hg.
Describe the major aspects of nutrition labeling regulations and List the information that must be displayed on food labels and give the general reasoning for all this regulation.
Calculate the enthalpy of vaporization of Br2. This element has vapor pressures of 271 mm Hg and 565 mm Hg at 30.0 .C and 50.0 .C, respectively.
What is the minimum length of a string whose fundamental frequency is 272 Hz? The speed of sound at this temperature is 340 m/s.
he molar enthalpy of vaporization of NH3 is 23.3 kJ/mol at its normal boiling point of -33.3 .C. How much energy is required to evaporate 1.00 kg of ammonia at -33.3 .C?
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Write down your Top-5 goals. What are your most important goals right now? Spend a moment thinking about the most important people in your life.
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Outline how the nervous system controls these functions and what researchers know or have recently discovered about a common disorder
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