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3 years ago

Como podem ser classificados os planetas do sistema Solar de acordo a sua constituição?

Chemistry

1 answer:

solong [7]3 years ago

6 0

Answer:

sorry

Explanation:

i don't understand your question

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Use the diagram to determine: How many atoms are on the Right side =___ How many atoms are on the Left side = ____ Is this a Bal

Lady_Fox [76]

Answer:

on the right side two and on left side it is6 yes it is a balanced equation pls mark me as the brainliset hope it helps you

5 0

3 years ago

What is the frequency of individuals with doctorates work in the field of physical science

Ghella [55]

Answer:

B) 1000-2000

Explanation:

uwu

5 0

3 years ago

Read 2 more answers

Describe how water molecules interact with sodium chloride molecules in order for water to dissolve salt.

Phantasy [73]

Answer:

Sodium chloride is an ionic salt that completely dissociates in water.

Explanation:

Sodium chloride in water dissociates according to the equation.

NaCl (aq) → Na + (aq) + Cl- (aq)

While water stays in balance according to the equation

2H2O (l) ⇄ H3O+(aq) + OH-(aq).

By dissociating the solute in the solvent, the water molecules pick up the sodium cations as well as the chloride anions to break the bonds in the salt crystals and thus produce the dissolution

If the ions are analyzed separately, we see that Na + interacts with water, so it would be producing sodium hydroxide, releasing protons.

If the reaction goes in the sense of products, the Na + would increase the concentration of [H +], however being a neutral salt the pH does not vary from 7, so the reaction would never go in the sense of products, but only reagents. That's why as the sodium hydroxide is a strong base, it only promotes the formation of water and the cation.

Na+ + H2O ← NaOH + H+

The same situation occurs with chloride, since no matter how much you want to form hydrochloric acid, it dissociates by promoting the formation of water plus the corresponding anion. Na + and Cl- act as too weak conjugate acid and base, so the reaction would never go in the direction of products

Cl- + H2O ← HCl + OH-

3 0

3 years ago

Is phosphorus dissolving in carbon disulfide a chemical or physical change?

Shkiper50 [21]

Phosphorus dissolving in carbon disulfide is a physical change.

A chemical change results from a chemical reaction, in which the nature of the substance is altered. On the other hand, a physical change is when matter changes forms but not chemical identity.

When phosphorus dissolves in carbon disulfide, it changes its state of aggregation, but not its nature. Thus, this is a physical change.

Phosphorus dissolving in carbon disulfide is a physical change.

You can learn more about physical and chemical changes here: brainly.com/question/13620149

6 0

2 years ago

Will ice melt faster with a lot of salt added or little salt added?

STatiana [176]

Answer:

alot

Explanation:

because salt contains stuff

5 0

2 years ago