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aalyn [17]
2 years ago
9

If you were building a device that used a chemical reaction to preserve food, like those used in refrigerators, what kinds of re

actions would you experiment with?
A. exothermic
B. combustion
C. endothermic
D. spontaneous
Chemistry
1 answer:
Salsk061 [2.6K]2 years ago
4 0
In order to preserve substance, we must create a low temperature environment. In order to do this, we must remove the heat energy in the environment via reactions that will absorb heat energy. These are endothermic reactions. The answer is C.
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SOLVE The density of a gas is 0.68 g/mL. What amount of space would 23.8 g of this gas occupy?
Contact [7]

Answer:

<h2>The answer is 35 mL</h2>

Explanation:

Density of a substance can be found by using the formula

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Hope this helps you

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3 years ago
a toy car is pushed forward with a force of 5N. Air resistance and friction apply a combined force of 3.5N backwards, what is th
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