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Alekssandra [29.7K]
3 years ago
8

Which is a chemical reaction that uses up energy?

Physics
2 answers:
Rudik [331]3 years ago
7 0

Answer: A limiting reaction

Explanation:

GenaCL600 [577]3 years ago
3 0

Answer:

A limiting reaction

Explanation:

limiting reactant. A substance that is completely used up in a reaction. endothermic. A reaction that uses up energy. physical.

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What 2 kinds of substances does convection occur ?
ch4aika [34]

Liquids and Gases

Explanation:

Convection is a form of heat transfer that is predominant in liquids and gaseous substances. This form of heat transfer is driven by density differences between gases and liquids.

  • Convection involves the actual movement of the particles of a medium.
  • Boiling of food is clinical example of convection in liquids. Hot part of the food in contact with the heat source becomes less dense and more buoyant. They rise to the top of the medium and are replace by the denser and colder part of the food.
  • Land and sea breeze is an example of convection in gases. The land warms the air around it during the day. It is hotter and less dense. The air mass moves to replace the ones on the sea where the air is relatively cold due to high specific heat capacity of water.
  • The reverse process occurs at night.

Learn more:

Heat transfer from the sun brainly.com/question/1140127

#learnwithBrainly

4 0
3 years ago
What type of electromagnetic waves do heat lamps give off?
Nitella [24]
Microwaves c…………….nnsjksisisysgxgd
7 0
2 years ago
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What kind of charge does an object have when it has given away electrons?
Step2247 [10]
Electrons have a negative charge, so if you give away electrons, you give away negative charge, thus ending with a positive charge.
6 0
3 years ago
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3) A 900N mountain climber scales a 100m cliff. How much work is done by the mountain climber?
Y_Kistochka [10]

Answer:

90 kJ

Explanation:

Work = force × distance

W = (900 N) (100 m)

W = 90,000 J

W = 90 kJ

4 0
3 years ago
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A positively charged plastic ruler is brought close to a piece paper resting on the desk. The piece of paper was initially neutr
stealth61 [152]

Answer: static electricity

Explanation:

When the plastic ruler is rubbed, friction opposes the motion and causes the transfer of electron from one surface to another such that plastic becomes negatively charged. When ruler is brought nearer to the paper, it induces the   positive charge in the piece of paper.

4 0
3 years ago
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