Atrain leaves a station and travels north at a speed of 105105 km/h. twotwo hours later, a second train leaves on a parallel track and travels north at 135135 km/h. how far from the station will they meet?

water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. at this point, equilibrium is reached. in an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

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