2. in Journey to the Center of the Earth, by Jules Verne, an adventurer travels through the

Chemistry

1 answer:

omeli [17]3 years ago

4 0

Crust, Mantel, Outercore, Innercore

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Which of the following is an example of how research into the effects of a chemical has changed how it is used? A. Finding out t

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B is the correct answer

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3 years ago

Which of the following is a definition of a base? O a. behaves as a catalyst. O b. accepts H ions from acids. Oc. turns cloudy w

yan [13]

Answer: b. accepts $H^+$ ions from acids

Explanation:

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions $(OH^-)$ when dissolved in water and an acid is defined as a substance which donates hydronium ions $(H_3O^+)$ in water.

According to the Bronsted Lowry conjugate acid-base theory, an acid is defined as a substance which donates $H^+$ ions and a base is defined as a substance which accepts $H^+$ ions.

$NH_3+H_2O\rightarrow NH_4^++OH^-$

Here water is donating $H^+$ ions, and thus act as acid and ammoia $NH_3$ is accepting $H^+$ ions from water and thus is a base.

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

Thus base is a substance which accepts $H^+$ ions from acids.

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3 years ago

4) I need Two that apply. How does a cloud form?

MrRissso [65]

Answer:

A cloud occurs when evaporated water condenses into visible water or ice. The three factors required in forming a cloud include: moisture, condensation, and temperature.

Explanation:

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There are six continents on Earth. True False

Vedmedyk [2.9K]

Answer:

False

Explanation:

There are 7.

Africa, Antarctica, Asia, Australia/Oceania, Europe, North America, and South America.

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