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The substances like CO2 and water move in and out of a cell by diffusion from the region of high concentration to low concentration. When the concentration of CO2 and water is higher in external environment than that inside the cell, CO2 and water moves inside the cell.
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Separation of 2 Immiscible liquids is done using a separating funnel. The above figure shows a separating funnel clamped to a stand. In this case the mixture to be separated contains oil and water.
Immiscible liquids do not mix well and have different densities. When the mixture is left undisturbed, the denser liquid comes to the bottom of the funnel, and the lighter liquid stays on top of it. Now by operating a stopcock carefully, one can transfer the denser liquid (here, water) to the conical flask. The stopcock is closed when water is completely transferred from the tunnel. The separation is done multiple times to ensure complete separation of the two components. Oil remains in the funnel and water is in a conical flask.
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You need to get really close to get to smell the unlit incense stick whereas when we light the incense stick we can get the smell even from a distance.
The reason is simple. When we light the incense stick the kinetic energy increases. Due to the increase in kinetic energy the particles vibrate more quickly. the particles of the aroma of the lit incense stick thus diffuse faster in the air and reach us far away.
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No, it isn't possible to break a stream of water with fingers.
The reason for this is that water is a liquid and its atoms are bonded together by attractive forces. Although the inter molecular attraction forces in water (liquids) is a bit lesser than solids so the molecules can move around freely, but these forces are strong enough to bind the water molecules with considerable force so that they don't break apart.
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