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3 years ago

Which answer defines exothermic reaction?

Chemistry

2 answers:

kicyunya [14]3 years ago

8 0

The answer which defines exothermic reaction is

a process in which energy is released as heat ( answer A)

<u><em>Explanation</em></u>

Exothermic reaction is a chemical reaction in which energy is released into environment in form of heat.

<u> For example of exothermic reaction</u>

Is a combustion reaction such as lighting a candle whereby oxygen react with wax to produce carbon (iV) oxide, water and heat.

JulsSmile [24]3 years ago

6 0

Answer:

Explanation:

correct on edg

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3 years ago

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3 years ago

Elena held a rock weighing 1 N in her hand. The rock has no velocity. <br> KE________?

nignag [31]

KE = 0

<h3>Further explanation </h3>

Energy is the ability to do work

Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:

$\large{\boxed{\bold{KE=\frac{1}{2}mv^2}}}$

So for two objects that have the same speed, the greater the mass of the object, the greater the kinetic energy

The stone in hand is in a motionless state (at rest) so that its velocity (v) = 0, so it has no kinetic energy

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