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professor190 [17]
3 years ago
9

The element in Period 4 and Group 14 of the Periodic Table would be classified as a

Chemistry
1 answer:
Paul [167]3 years ago
7 0

Answer:

Chalcogen

Explanation:

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An unknown substance has the following properties:
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Homogenous mixture

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An atom is a small building block that forms matter. Many different models of an atom have been made over the years. Which of th
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<em>The correct option is A) The atom has changed over the years.</em>

Explanation:

Option A is not correct because an atom does not change. It remains the same always. The structure of an atom will always contain neutrons, protons and electrons.

Scientific theories tend to change over time as new information is brought up. Novel techniques lead to more advanced experiments and results. As a result, a scientific theory is subjected to change whenever evidence is found for a new theory which challenges the older one.

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How many moles of NaOH are in 27.8 mL of 0.168 M NaOH?
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Your answer would be 0.00285 moles.
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Examples of permineralization

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