Which of the following forest management practices is the most harmful to forest ecosystems?
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Chemistry, 05.10.2019 04:00 donavancoulter712
Which of the following forest management practices is the most harmful to forest ecosystems?
a. clearcutting
b. shelterwood cutting
c. group selection
d. single tree selection
Answers: 2
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Matches the chemical name of each oxide of phosphorus to its chemical formula
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In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right
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Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth
Answers: 2
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There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
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