Does Soap Affect the Surface Tension of Water? Background: Surface tension refers to water’s ability to "stick to itself". Surface tensioncan be measured and observed by dropping water (drop by drop) onto a penny. Thenumber of water drops that can fit on a penny will surprise you. Question: How does soap affect the water’s surface tension? Hypothesis: I think that the surface tension of soapy water will be less than that of freshwater because H 2 0 has strong polar bonds‚ and when water is mixed
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[Type text] [Type text] [Type text] _An experiment on the effect of surface area to volume ratio on the rate of osmosis of Solanum tuberosum L._ BACKGROUND A cell needs to perform diffusion in order to survive. Substances‚ including water‚ ions‚ and molecules that are required for cellular activities‚ can enter and leave cells by a passive process such as diffusion. Diffusion is random movement of molecules in a net direction from a region of higher concentration to a region of lower concentration
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Formula is one of the most frequently used urban hydrology methods in Malaysia. It gives satisfactory results for small catchments only • The formula is: C . y It . A Qy = 360 where‚ Qy = y year ARI peak flow (m3/s) C= dimensionless runoff coefficient yI t = y year ARI average rainfall intensity over time of concentration‚ tc ‚ (mm/hr) A= drainage area (ha) Or Q=CiA i = average rainfall intensity (in/hr)equals to tc A = catchment area ( acre) Q = Peak flow ( cusecs)
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cut 3 potato cubes using the dimensions from above. 2. Obtain TEACHER’S SIGN-OFF BEFORE you proceed! 3. Submerge the potato cubes (cells) into the iodine solution for 20 minutes. 4. While you are waiting for 10 minutes‚ calculate the surface area‚ volume‚ and surface area to volume ratio for each of the 3 potato cubes (cells). AFTER 10 Minutes 5. Carefully remove the potato cubes (cells) from the iodine solution and place them on absorbent paper towels. 6. Cut each cell in half and observe
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Environmental impact of mining The environmental impact of mining includes erosion‚ formation of sinkholes‚ loss of biodiversity‚ and contamination of soil‚ groundwater and surface water by chemicals from mining processes. In some cases‚ additional forest logging is done in the vicinity of mines to increase the available room for the storage of the created debris and soil. Besides creating environmental damage‚ the contamination resulting from leakage of chemicals also affect the health of the
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increases surface runoff since there is less oppurtunity for rainwater to sink into the ground. .Retarded or supressed infiltration accelerates overland flow production‚hastening delivery of rainwater into streams and rivers‚ the oftentimes the water ends up as floodwater into the ocean‚ especially for an archipelagic country like the Philippines. Forest denudation also deprives recharge of groundwater aquifers since there is less oppurtunity for water to linger in the ground surface to infiltrate
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Surface Area to Volume Ratio and the Relation to the Rate of Diffusion Aim and Background This is an experiment to examine how the Surface Area / Volume Ratio affects the rate of diffusion and how this relates to the size and shape of living organisms. The surface area to volume ratio in living organisms is very important. Nutrients and oxygen need to diffuse through the cell membrane and into the cells. Most cells are no longer than 1mm in diameter because small cells enable nutrients and oxygen
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calling water purified from sewer waste “toilet to tap‚” which has been widely used by the media as well as politicians and has only a negative effect on the public’s perception of reclaimed water‚ and start investing in a system for saving rain water runoff. Although
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To investigate the relationship between surface area : volume ratio and heat loss. INTRODUCTION: The aim of this experiment is to investigate and find the relationship between heat loss (of water) and surface area to volume ratio of animals. To investigate this‚ we are going to use three flasks of different volume (as the equivalent the animals) and thus different surface areas filled with water. BACKGROUND: Surface Area : Volume Ratios We will be using the following formula for calculating
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description of water pollution.) A major source of non-point water pollution in the urban environment is storm water runoff‚ in the past it was acceptable for this runoff to be channeled into the natural systems of washes‚ creeks‚ and rivers. However‚ this is no longer true‚ the Clean Water Act of 1972 and the Water Quality Act of 1987 set standards for water discharged to local surface water‚ and established fines for discharges that exceed the limits. (As in the Clean Water Act Forum). Additional
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