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Gnom [1K]
2 years ago
14

Which two options are examples of waves refecting

Chemistry
1 answer:
sergey [27]2 years ago
8 0

Answer:

A voice echo

Your image in a mirror

Explanation:

hope this helps

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The Selenium is the element that is likely to be the most brittle
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Помогите срочно сделать по химии промежуточную отестацию за 8 класс
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This is site for English  speakers.  Этот сайт на английском, поэтому вопрос могут удалить

Explanation:

1. 2)

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11. SO3, H2SO4, Na2SO4

12.

A) оксид меди (II) 2) CuO

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13.

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14. 2Ca + O2 = 2CaO

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Alex787 [66]

Answer:

The carbons on either side of the double bond are pointed in the same direction

4 0
2 years ago
10 atoms of aluminum reacts with 6 molecules of oxygen gas to produce aluminum oxide. 4 Al + 3 O2 ––> 2 Al2O3 What is the exc
Mrrafil [7]

The excess reactant is Aluminum.

<u>Explanation:</u>

We have to write the balanced equation as,

4 Al+ 3 O₂ → 2 Al₂O₃

According to the molar ratio 4: 3, from the given balanced equation, we can say that 4 atoms of Al reacted with 3 molecules of oxygen.

Given that 10 atoms of aluminum reacts with 6 molecules of oxygen, as per the ratio only 8 atoms of Aluminum is required to react with 6 molecules of oxygen, so excess reactant is Aluminum.

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3 years ago
Na2SO3" represents sodium sulfite. What does the 4 mean in the formula 4Na2SO3? There are four atoms of sodium. There are four a
coldgirl [10]

The designation "4" before Na2SO3 simply means that there are four molecules of sodium sulfite.

A molecule is formed when two or more atoms of the same or different elements come together. The formula of the molecule must reflect the number of atoms from which it is formed. The designation "4" before Na2SO3 simply means that there are four molecules of sodium sulfite.

The "The World on Turtle's Back" is a legend creation story. According to this story, the world was created on a giant turtle back. The folktale is common among the  Iroquois Native Americans.

Learn more: brainly.com/question/19922822

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