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irina [24]
3 years ago
11

Which of these is an example of a chemical change?

Physics
2 answers:
xenn [34]3 years ago
5 0

Hello!  B. would be an example of a chemical change.

yanalaym [24]3 years ago
4 0

the answer is a hope this helps

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Base your answers to questions 4 and 5 on the informa- tion below
emmasim [6.3K]

If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.

<h3>What is an electrical charge?</h3>

An electrical charge can be positive or negative. From the laws of electrostatics, unlike charges attract while like charges repel. As such the effect observed when the rods are individually brought near the sphere will decide the charge on the sphere.

If the sphere is neutral, there is no effect observed when each rod is brought near the sphere. If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.

Learn more about electrostatics: brainly.com/question/9774180

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2 years ago
If element x has 94 protons how many electrons does it have​
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94 electrons. protons and electrons are always the same, but neutrons are different.

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The variable that you change during an experiment is called what type of variable?
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Two ions with masses of 4.39×10−27 kg move out of the slit of a mass spectrometer and into a region where the magnetic field is
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7.2 cm

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The radius of singly changed ion is given by

r = \frac{mv}{Bq}

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r = \frac{4.39\times 10^{-27}\times 7.92 \times 10^{5}}{0.301\times 1.6\times 10^{-19}}

r = 0.072 m

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3 years ago
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