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Katarina [22]
3 years ago
5

Explain why some fibres are called synthetic

Chemistry
1 answer:
Mashcka [7]3 years ago
7 0
There are some fibres that are prepared by man by using chemicals, these are called synthetic fibres these are made of small units that join together to form long chains
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Answer:

Synthesis

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Katie needs to measure water for a recipe she is using to cook dinner she should measure the liquid in...
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3 years ago
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What happens to the number of waves when you decrease the wavelength?
Keith_Richards [23]

C

Decreasing the wavelength increases the frequency of a wave and vice versa, as long as the energy of the wave remains constant.

Explanation:

The energy of a wave is given by the formula;

E= hf

Whereby;

E = energy

h = Plank’s constant

f = frequency

Remember that f can be also represented as;

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Whereby;

λ = wavelength

Wavelength and frequency are therefore inversely proportional.

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Learn More:

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6 0
3 years ago
The pOH of a solution is 6.0. Which statement is correct?
I am Lyosha [343]

Answer : Option D) The pH of the solution is 8.0.

Explanation : pOH of a solution is a measure of hydroxide ion (OH^{-}) concentration in a particular solution. It gives the measure of alkalinity of a solution. Normally, aqueous solutions at 25°C have pOH which is less than 7 are usually alkaline, when pOH is found to be greater than 7 then they are acidic and when pOH will be equal to 7 then it is neutral.

pH + pOH = 14, this relationship is used to find pH of any unknown solution with given pOH value,

Here, we known pOH is 6.0, so we get,

pH = 14 - 6 = 8.0;

Hence, the pH will be 8.0.

5 0
3 years ago
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What causes a spring to bounce up when it is pushed down and then released?
nalin [4]

(a) Pushing the spring down gives it stored mechanical energy that turns into motion

Explanation:

Pushing on the spring causes the mechanical energy, of pushing on the spring, to be stored in the spring through potential elastic energy. Due to the elasticity of the spring, when the spring is released and resumes its initial shape the stored energy is released and can be used to do work such as motion.

4 0
3 years ago
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