The carton of milk in your refrigerator contains 20 cells per glass of a strain of e. coli which makes people sick. this strain doubles every 2 days, and your immune system can destroy up to 1000 cells per glass without noticeable effects. (a) when should the carton of milk be poured down the drain? (b) at room temperature this strain doubles every 8 h. for how long is the milk drinkable if left on the counter?

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

im pretty sure its b

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

1 is the answer to this problem