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Dmoney5104
01.12.2020 •
Chemistry
a student spills a small amount of HCl into an aquarium containing 150 l of water reducing the ph from 7.35 to 3.60 what mass of Ca(OH)2 would have to be added to return the ph to its original value
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Ответ:
2. Common property resources (environmental) are natural resources owned and managed collectively by a community or society rather than by individuals.
3.
Wind erosion is a natural process that moves soil from one location to another by wind power. ... Wind erosion can be caused by a light wind that rolls soil particles along the surface through to a strong wind that lifts a large volume of soil particles into the air to create dust storms.
4. Terrace cultivation or terrace agriculture method of growing crops on sides of hills or mountains by planting on graduated terraces built into the slope. Though labour-intensive, the method has been employed effectively to maximize arable land area in variable terrains and to reduce soil erosion and water loss.
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