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Katyanochek1 [597]
3 years ago
8

PLZ HELP !!!!!

Chemistry
2 answers:
lbvjy [14]3 years ago
8 0

Surface waves travel across the Earth’s surface and body waves travel through the Earth’s interior.

there you go :)

Olenka [21]3 years ago
3 0
I have a answer but I’m not sure of it
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If approximately equal volumes of an acid and a base of equal strengths are combined, the resulting solution should have a pH of
Masja [62]

Answer : The resulting solution will have a pH of 7.

Explanation:

Whenever acid and base reacts with each other to form water molecule is called Neutralization reaction. This water molecules is formed from the  hydronium ion (H^+) from acid and hydroxide ion(OH^-) from base.

When the equal volumes of acid and base of equal strength are combined, the resulting pH of the solution becomes 7.

The pH 7 value means that the solution is neutral.

4 0
3 years ago
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Which statement describes how heat is transferred by convection?
fredd [130]

Answer:

i think it will be warm air rises and takes heat with it eventually it cools and sinks

Explanation:

please mark me as brainliest if it helps

7 0
3 years ago
The compound trimethylamine, (CH3)3N, is a weak base when dissolved in water. Write the Kb expression for the weak base equilibr
Rina8888 [55]

<u>Answer:</u> The expression of K_b is written below.

<u>Explanation:</u>

We are given a chemical compound which is trimethylamine that acts as a weak base when dissolved in water.

It accepts a proton from the water to form trimethylammonium ion and hydroxide ion.

The chemical equation for the reaction of trimethylamine in water follows:

(CH_3)_3N+H_2O\rightleftharpoons (CH_3)_3NH^++OH^-

The expression of K_b for above equation follows:

K_b=\frac{[(CH_3)_3NH^+][OH^-]}{[(CH_3)_3N]}

Hence, the expression of K_b is written above.

5 0
3 years ago
Scientists examine fossils from three different animals. They determine that all three animals share similar structures and
mezya [45]

Answer:

C,B,A

Explanation:

C has the most similar structure

B has the second most similar structure

A has the least similair structure

6 0
3 years ago
What name is given to substances in which atoms of two or more elements are chemically combined?
anygoal [31]

Answer:

Compounds

Explanation:

Substances in which atoms of two or more elements are chemically combined are called compounds.

A compound is a substance formed when two or more elements are chemically joined.

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3 years ago
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