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katovenus [111]
3 years ago
15

What do any two samples of the element mercury (Hg) have in common?

Chemistry
2 answers:
denpristay [2]3 years ago
7 0

Answer:

I think its C.

Explanation:

because they are the same element, they are the same type of atoms.

adoni [48]3 years ago
5 0

Answer:

<em>C</em>

Explanation:

<em>The same types of atoms</em>

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Answer:

1. Stop Cutting down Trees

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Explanation:

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Substances that have a define size and shape and vibrating particles that are close together are​
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Substances that have a define size and shape and vibrating particles that are close together are called Solid.

Explanation:

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Lets talk about solid state in detail.

In solid particles are closely packed and so they have very less or no space to move which results in vibrating particles. This results in solid substances having a fixed shape and volume.

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3 years ago
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Which one of the following substances is a liquid fuel used in rocket engines?
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Phosphate buffers are commonly used in biological research. If a small amount of strong acid is added to a buffer solution that
lozanna [386]

Answer:

A) [H3PO4] will increase, [KH2PO4] will decrease, and pH will slightly decrease.

Explanation:

A buffer is a solution which resists changes to its pH when a small amount of acid or base is added to it.

Buffers consist of a weak acid (HA) and its conjugate base (A–) or a weak base and its conjugate acid. Weak acids and bases do not completely dissociate in water, and instead exist in solution as an equilibrium of dissociated and undissociated species. When a small quantity of a strong acid is added to a buffer solution, the conjugate base, A-, reacts with the hydrogen ions from the added acid to form the weak acid and a salt thereby removing the extra hydrogen ions from the solution and keeping the pH of the solution fairly constant. On the other hand, if a small quantity of a strong base is added to the buffer solution, the weak acid dissociates further to release hydrogen ions which then react with the hydroxide ions of the added base to form water and the conjugate base.

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Therefore, [H₃PO₄] will increase, [KH₂PO₄] will decrease, and pH will slightly decrease.:

4 0
3 years ago
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