Answer the following the questions given below  Given (Dissolution of Sodium Hydroxide) Mass of Water = 200g  Initial Temperature of water = 20.0°C              Final Temperature of water = 26.49 °C              ?water= 5430.832J ?dissolution= 5566.6028J Mass of Solid NaOH= 5.0g  Moles of solid NaOH=0.12501 mol Δ?of NaOH dissolution= -44.51 kJ/mol Questions: 1.Is the dissolution of NaOH endothermic or exothermic? Justify your answer. 2.If you touch the sides of a beaker containing NaOH being dissolved, will it feel warm or cold to touch?

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Q: Can you answer question 12 only

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Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.