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banuelos90016
28.06.2019 •
Chemistry
Give 2 examples of energy transformation that occur when making toast in a toaster oven
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Ответ:
When making toast in toast oven, the following energy transformation occur
a) electric energy is converted to heat energy which heat up the filaments of toaster, which helps in roasting of toast.
b)the heat energy is transferred to bread or toast
Ответ:
12.8 moles
Explanation:
The formula for water is H2O, so for every mole of water, there are two moles of hydrogen and one mole of oxygen.
As the ratio of oxygen particles to water particles is one to one, 12.8 moles of oxygen are required to produce 12.8 moles of water.
Therefore, 12.8 moles of water are produced from 12.8 moles of oxygen (assuming hydrogen is available in excess).