Determine projected world population in given year
Population of world in 1987 was 5 billion and relative growth rate was evaluated at 2% per year. Suppose that world population follows the exponential growth model, determine projected world population in 1995.
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A mass of 3.00 kg is positioned at x = 2.0 cm and y = -4.0 cm. A mass of 3.00 kg is positioned at x = -5.0 cm and y = 2.0 cm. A mass of 4.00 kg is positioned at x = -3.0 cm and y = -3.0 cm. Where is the position of the center of mass (x, y)?
The mixture was stirred until all of theNaHCO3 dissolved. 3.5 g of solid NaHCO3 was added to 50.0 g of water in a calorimeter. The temperature of the water changed from 20.1*C to 16.7*C.
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A student is required to generate 90.0 mL of carbon dioxide at the 750mm Hg and 21*C using the potassium hydrogen carbonate and HCl.
Write down the balanced net ionic equation for the reaction that occurs when the solid potassium hydrogen carbonate reacts with the hydrochloric acid.
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Discuss how much energy is needed to warm the15.0g of ethyl alcohol from 4C to 25C? (Sp heat ethyl alcohol is 0.590 cal/g-C)
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