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3 years ago

What’s a crystallisation

Chemistry

2 answers:

larisa86 [58]3 years ago

7 0

Crystallization is the solidification of atoms or molecules into a highly structured form called a crystal.

madreJ [45]3 years ago

5 0

Answer:

passage of water at 0 degrees

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A gas at 155 kilopascals and 25 °c has an initial volume of 1 liter the pressure of the gas increases to 605 kilopascals as the

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3 years ago

Identify ways to reduce the risk of liquid bumping while heating.

postnew [5]

The most common way of preventing bumping is by adding one or two boiling chips to the reaction vessel. However, these alone may not prevent bumping and for this reason it is advisable to boil liquids in a boiling tube, a boiling flask, or an Erlenmeyer flask.

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3 years ago

What distinguishes a neutral atom from an ion

Aliun [14]

<span>will they contain the same number of protons as electrons. By the meaning, an "ion" is an electrically charged particle produced by either removing electrons from the neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative" ion".
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3 years ago

In a lab, silver nitrate,AgNO₃, is dissolved in water until no solid is observed in the container. Then, a solution of sodium ch

leva [86]

Answer:

The answer to your question is: A, C, E

Explanation:

After reading the information given, we can conclude that both reactants react to form a new solid product and another product that do not precipitate.

The reaction is:

AgNO₃ + NaCl ⇒ AgCl + NaNO₃

a. Formation of a solid indicates that a chemical reaction occurred This option is correct, precipitation indicates that a changed occurred in the solution due to a chemical reaction.

b. The initial disappearance of silver nitrate in water indicates a chemical reaction occurred No, what is happing is that silver nitrate is dissolving in water, this process is a physical change because matter do not change its nature.

c. The color change of the solution indicates a chemical reaction occurred This option is true, when a color appears suggest the formation of a new product.

d. A chemical reaction occurred when silver nitrate was added to water

This option is not correct, in this process silver nitrate is dissolving in water but it is not a chemical reaction because matter does not change is nature.

e. A chemical reaction occurred when the solutions were combined This option is true because silver nitrate and sodium chloride react to form a new product (solid formation and change in color).

f. The lack of temperature change indicates a chemical reaction didn't occur This is false, some reactions do not need a change of color to happen.

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3 years ago

When the vapor pressure is greater than the atmospheric pressure, what will occur?

Bad White [126]

Answer:

Evaporation wll occur

Explanation:

Boiling point is reached when the vapor pressure equals the atmospheric pressure around. The vapor pressure is the pressure exerted by a gas which is in contact with its own solution or liquid. It increases with increasing temperature.

The atmospheric pressure is the pressure of the atmosphere around. When the vapor pressure exceeds atmospheric pressure, boiling point is reached and surpassed. At this point, evaporation will occur.

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3 years ago

Read 2 more answers