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vlada-n [284]
3 years ago
7

List any objects without weight​

Chemistry
2 answers:
Nookie1986 [14]3 years ago
7 0

Answer:

the awnser is air and gas

Explanation:

air is not classified as a substance but it has no weight and gas is a substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid)

KATRIN_1 [288]3 years ago
3 0

Answer:

feathers, paper, sweets, marbles, buttons and beads

Explanation:

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Which of these elements has two valence electrons? A.hydrogen B.barium C.nitrogen D.krypton E.bromine
Umnica [9.8K]

Answer:

Barium

Explanation:

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3 years ago
How would I draw this? Thank you in advance!<br> (Z)-4-chloro-3-methylhept-2-ene
Savatey [412]

Answer:

In the attached photo.

Explanation:

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You could find the structure in the attached photo, taking into account that the initial (Z) resembles to the trans arrangement for this alkene.

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3 years ago
Identify which one is the reducing agent in this reaction
Romashka-Z-Leto [24]

Answer:

Na.

Explanation:

  • The oxidation-reduction reaction contains a reductant and an oxidant (oxidizing agent).
  • An oxidizing agent, or oxidant, gains electrons and is reduced in a chemical reaction. Also known as the electron acceptor, the oxidizing agent is normally in one of its higher possible oxidation states because it will gain electrons and be reduced.
  • A reducing agent (also called a reductant or reducer) is an element (such as calcium) or compound that loses (or "donates") an electron to another chemical species in a redox chemical reaction.

  • For the reaction:

<em>2Na + S → Na₂S.</em>

<em></em>

Na is oxidized to Na⁺ in (Na₂S) (loses 1 electron). "reducing agent".

S is reduced to S²⁻ in (Na₂S) (gains 2 electrons). "oxidizing agent".

6 0
4 years ago
When swimmers get out of the pool and sit in the sun, their wet skin dries quickly. What happens to the water?
I am Lyosha [343]

Answer:

It evaporates and moves into the air.

Explanation:

When water is left out for a while, it evaporates into the air! :)

7 0
3 years ago
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43. Which of the following statements concerning the action of G proteins on adenylate cyclase is true? I. G proteins always ser
ExtremeBDS [4]

Answer:

Some G proteins activate adenylate cyclase, while others inhibit it.

Explanation:

G proteins helps in the signal transduction process that transfer message in the body. GPCRs (G-protein-coupled receptors) are located on the surface membrane of the cell.

The G protein can activates the protein or might deactivate the proteins that helps in the adenylate cyclase. The particular phosphorylation and dephosphorylation process at different sites by the G proteins can result in activation and inactivation of adenylate cyclase.

Thus, the correct answer is option (C).

8 0
4 years ago
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