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Nitella [24]
4 years ago
10

Half-reactions can be written to represent all

Chemistry
2 answers:
kobusy [5.1K]4 years ago
5 0
Answer=4

<span>oxidation and reduction reactions
</span>
Likurg_2 [28]4 years ago
4 0

Answer: Option (4) is the correct answer.

Explanation:

Half reactions are the reactions that represent oxidation and reduction reactions through separate steps.

For example, 2Na + Br_{2} \rightarrow 2Na^{+} + 2Br^{-} the oxidation and reduction half-reaction will be as follows.

Oxidation half-reaction: 2Na \rightarrow Na^{+} + 2e^{-}

Reduction half-reaction: Br_{2} + 2e^{-} \rightarrow 2Br^{-}

Thus, we can conclude that half-reactions can be written to represent all oxidation and reduction reactions.

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Give three examples, from the lab, where potential energy was converted to kinetic energy.
GREYUIT [131]

Give 3 Examples of where potential energy was converted to knlinetic energy:

Curtain

A ball before moving

An apple from the tree then falling down

When the Curtains are still, we call the that potential energy. If you move the curtains around, that is kinetic energy

The ball is still, that is potential energy. Then the ball is moving, the is kinetic energy

There is a apple ganging from a tree, that is potential energy. That apple is fall, this is kinetic energy

Hope this helps

Don't type or write in the answer, I'm not sure what from the lab means. These are a few potential into kinetic energy I could have think of!

4 0
3 years ago
Nitric acid (HNO3) reacts with ammonia (NH3) in aqueous solution. Use your knowledge of nitric acid to decide what type of react
Komok [63]

Answer:

Both reactions are acid-base reactions

Explanation:

An acid base reaction is a reaction that occurs between an acid and a base. This reaction often leads to the formation of a salt in the process. The nature of the salt depends on the type of acid and base that reacted in the process.

Both HNO3 and H2SO4 are strong acids. However, ammonia is a weak base. The acid base reaction between ammonia and these strong acids is shown below;

HNO3(aq) + NH3(aq) ------>NH4NO3(aq)

H2SO4(aq) + 2NH3(aq) ----> (NH4)2SO4(aq)

8 0
3 years ago
A brick has dimensions of 15 cm x 6.0 cm x 12cm. What is the volume of the brick in cubic meters?
oksian1 [2.3K]
In order to answer this question, the dimensions of the brick in centimetres need to the converted to dimensions in metres. In order to convert centimetres to metres you need to divide by 100. Doing this yields brick dimensions of 0.15 m x 0.06 m x 0.12 m. Multiplying the length, width and height together yields the volume of 0.00108 cubic metres. 
5 0
3 years ago
If Brian and his scooter had a mass of 50 kg, how much force would it take for him to accelerate at 0.8 m/s2
OleMash [197]

Answer:

<h2>The answer is 40 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

<h3>force = mass × acceleration</h3>

From the question

mass = 50 kg

acceleration = 0.8 m/s²

We have

Force = 50 × 0.8

We have the final answer as

<h3>40 N</h3>

Hope this helps you

8 0
3 years ago
A scientist does one trial for an experiment on positively and negatively charged objects, and there is an error in the results.
Serhud [2]

Answer:

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Explanation:

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