austinross363
27.05.2021 •
Chemistry
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melodymuzeya017
3 days ago
Chemistry
College
1. You are given 50 g of hot coffee (at 80 °C) but given that it is a hot day, you now
want a cold coffee. What is the minimum amount of ice (in grams) that you must add
to cool the coffee to a temperature of 10 °C? Assume that coffee has the same specific
heat as water and neglect the heat content of the cup and heat exchanges with the
surroundings. The ice temperature is 0 °C. Given: water(3) — 37.6 J/(mol °C), Cwatert 1) =
75.4 J/mol °C), AH tus – 6.01 kJ/mol.
If the
ice comes
from a freezer at - 20 °C, would you expect to have to add more or
less ice to cool the coffee? Support your answer by doing the calculation.
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Ответ:
Ответ:
Ответ:
Explanation:
Under good conditions the seedling can thrive in soil that does not have any clay as long as it gets the proper nutrients and right amount of sunlight/water that it needs. Clay in soil can provide the nutrients necessary for seedlings to thrive but can also cause many negatives. One such con of using clay is that it does not absorbe water very well, this ultimately causes the soil to become waterlogged and drowns the plants as no oxygen can pass through. This would ultimately kill the plants.