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Cold packs are designed to become very cold when activated. When the pack is activated, a chemical reaction occurs to make the temperature of the cold pack decrease. What must be true of this
chemical reaction? (2 points) A) The reaction releases energy to its surroundings. B) The products and reactants have the same amount of energy. C) The products have less energy than the reactants. D) The reaction absorbs energy from its surroundings.
C. released or absorbed.
Expert answered|iamhanifah|Points 300|
Question|Rated good
Asked 6/21/2011 7:25:45 AM
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Questions asked by the same visitor
cube has a side of 5 cm. It has a mass of 250 grams. The density of the cube is ____________________ A) 2.0 g/cm3 and will float in water B) 2.0 g/cm3 and will sink in water C) 50 g/cm3 and will float in water D) 50 g/cm3 and will sink in water
Weegy: 50g/cm3 User: will it flow in the water or sink in the water Weegy: I dont know, im not sure i think it will flow (More)
Question
Updated 6/14/2011 2:48:59 PM
1 Answer/Comment
density =mass/volume, so density is B) 2.0 g/cm3 and as it's more dense than water it will will sink in water
Added 6/14/2011 2:48:59 PM
Mass is defined as the amount of matter an object has. A) True B) False
Weegy: Mass is defined as the amount of matter an object has. It is true. (More)
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Expert Answered
Updated 3/23/2014 10:39:11 AM
1 Answer/Comment
a
Added 6/14/2011 7:16:18 AM
This answer has been flagged as incorrect.
Flagged by andrewpallarca [3/23/2014 10:39:09 AM]
Mass is a measure of how much inertia an object shows. A) True B) False
Weegy: i think false (not sure) (More)
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Updated 6/14/2011 2:41:01 PM
1 Answer/Comment
It's true
Added 6/14/2011 2:41:01 PM
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