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Jonathan is a newly recruited lab technician at a school laboratory .

Jonathan is a newly recruited lab technician at a school laboratory . A batch of cells in the school laboratory needs to be kept at 15  C for a particular experiment to be performed . However, the equipment used to maintain the temperature of the cells has stopped working .

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Jonathan is a newly recruited lab technician at a school laboratory .

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  1. Jonathan is a newly recruited lab technician at a school laboratory. • A batch of cells in the school laboratory needs to be kept at 15 C for a particular experiment to be performed. However, the equipment used to maintain the temperature of the cells has stopped working.

  2. Therefore, the container of cells will be placed into an insulated beaker filled with water at 15C. Jonathan has been tasked to prepare the beaker of water. Jonathan knows that by mixing ice and water in certain proportions, he will be able to get the water at the required temperature.

  3. Jonathan thought… But if I put too little ice, the water will be too warm for the cell samples! If I put too much ice, the water will be too cold.

  4. Your challenge for the day! Suggest and explain how much water and how much ice Jonathan should mix.

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