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Ksju [112]
4 years ago
8

Which chemical reaction absorbs energy

Physics
2 answers:
Vinvika [58]4 years ago
3 0
All chemical processes are accompanied by energy changes. When a reaction proceeds, it either releases energy to, or absorbs energy from, its surroundings. In thermodynamics, these two types of reactions are classified as exothermic or endothermic, respectively.
HACTEHA [7]4 years ago
3 0

Explanation:

Chemical reactions are the reactions that result in formation of a new compound due to change in chemical composition of the reactants.

Chemical reactions can be either endothermic or exothermic in nature.

Endothermic reactions are the reactions in which reactants absorb energy. Whereas in exothermic reactions energy is released.

Thus, we can conclude that endothermic chemical reaction absorbs energy.

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Explanation:

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Julie wants to know if adding calcium fertilizer to tomato plants will help prevent a disease of tomato plants called blossom-en
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A heating element has a resistance of 180 Ω and draws a current of 1.60 A. What is its power?
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its either 288Watts or 112.5 Watts

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3 years ago
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Isla’s change in velocity is 30 m/s, and Hazel has the same change in velocity. Which best explains why they would have differen
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....

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A body of mass 100g moving with a velocity of 10.0m/s collides with a wall .if after the collision it moves with a velocity of 2
ch4aika [34]

Answer:

-1.2 kg - m/s

Explanation:

\pink{\frak{Given}}\begin{cases}\textsf{ A body of mass 100g moving with a velocity of 10.0m/s collides with a wall .}\\\textsf{ After the collision it moves with a velocity of 2.0m/s in the opposite direction.}\end{cases}

And we need to find out the change in momentum of the body . Here ,

  • velocity before collision (u) = 10m/s
  • velocity after collision (v) = 2m/s .

We know that momentum is defined as amount of motion contained in a body . Mathematically ,

\sf\longrightarrow momentum (p)= mass(m) * velocity(v)

Therefore change in momentum will be,

\sf\longrightarrow \triangle p = mv - mu

Since the direction of velocity changes after the collision , the velocity will be -2m/s .

\sf\longrightarrow \Delta p = 100g( -2m/s -10m/s) \\

\sf\longrightarrow \Delta p =\dfrac{100}{1000}kg ( -12m/s)  \\

\sf\longrightarrow \Delta p   = 0.1 kg * -12m/s \\

\sf\longrightarrow \boxed{\bf \Delta p = -1.2 \ kg-m/s} \\

7 0
2 years ago
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