Question 11 (3 points)

Chemistry

1 answer:

Ugo [173]3 years ago

4 0

Answer:

The outer core of the earth is liquid.

Explanation:

Seismic waves travel through the Earth at different speeds and are reflected and refracted diffracted differently as they encounter layers of different densities.

By analyzing these waves, they have concluded that there is an inner core of solid iron surrounded by a liquid outer core consisting of nickel and iron.

A is wrong. The Earth consists of several layers

C is wrong. Seafloor spreading is caused by the movement of tectonic plates away from each other.

D is wrong. The mantle is mostly solid rock.

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(((NEED ANSWER QUICK!!!)))<br><br> Which is the stronger conjugate base, CN- or OCN-? Explain

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The stronger conjugate base will be the weaker acid; i.e., the acid with the smaller Ka-value.

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Given conjugate base CN⁻ => weak acid => HCN => Ka =4.9 x 10⁻¹⁰

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Ka(HCN) << Ka(HOCN) => CN⁻ is a much stronger conjugate base than OCN⁻

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