3 years ago

The Positively charged center of an atom is called

1 answer:

5 0

Answer: The Nucleus: The Center of an Atom. The nucleus, that dense central core of the atom, contains both protons and neutrons. Electrons are outside the nucleus in energy levels. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge.

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Which best describes an element? A pure substance. A type of a mixture. A pure compound. An impure substance.

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a pure compound because an element is untouched and is just itself

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Explanation:

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3 years ago

What is the property of a neutron?

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A sample of gas occurs 9.0mL at a pressure of 500mmHg. A new volume of the same sample is at 750mmHg. Use two significant figure

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Answer:

V₂ = 6.0 mL

Explanation:

Given data:

Initial volume = 9.0 mL

Initial pressure = 500 mmHg

Final volume = ?

Final pressure = 750 mmHg

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According to Boyle's Law

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V₂ = P₁V₁ / P₂

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3 years ago