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Unformatted text preview: Distance( cm) Solution Floating spinach leaves 50cm NaCO 3+ B 1 aCl 25cm NaCO 3+ BaCl 1 10cm NaCO 3+ BaCl 1 Using sodium bicarbonate for the first test four spinach leaves floated to the surface at 50cm, 5 spinach leaves floated to the surface at 25cm and 7 spinach leaves floated to the surface at 10cm (figure 1). Using a solution consisting of sodium bicarbonate and barium chloride the rate of photosynthesis seemed to stop only allowing one spinach leaf to float to the surface (figure 2). Conclusion: The hypothesis was not supported by the experimental data. The hypothesis was not supported because photosynthesis did not stop completely allowing one spinach leaf to rise to the surface as a result of the production of oxygen. Herbicides do however limit photosynthesis greatly only allowing a small amount of photosynthesis. With barium chloride the proximity to the light source did not matter....
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