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vlada-n [284]
3 years ago
7

Pick 1 answer, please help!

Chemistry
2 answers:
nasty-shy [4]3 years ago
4 0
The the answer is: C
Alexeev081 [22]3 years ago
3 0
The correct answer is option c
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Explain how, the removal of thermal energy (heat) from matter affects its particles.
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Answer:

When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.

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What is the de Broglie wavelength (in meters) of a 45-g golf ball traveling at 72 m/s?
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Answer: The de broglie wavelength is 2.037 \times 10^{-34} m.

Explanation:

Calculate  \lambda = \frac{h}{p}as follows.

          \lambda = \frac{h}{p}

where,

          h = plank's constant = 6.6 \times 10^{-34} m^{2} kg/s

         p = momentum = mass \times velocity

Putting the values in the formula as follows.

        \lambda = \frac{h}{mass \times velocity}

                               =  \frac {6.6 \times 10^{-34} m^{2} kg/s}{0.045 kg \times 72 m/s}                        

                               =  2.037 \times 10^{-34} m

Thus, the de broglie wavelength is 2.037 \times 10^{-34} m.

                               

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Answer:

acid +alkaline =salt and water

Explanation:

if an acid reacts with an alkaline they form salt and water

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True

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