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3 years ago

Which reaction leads to the formation of a precipitate?

Chemistry

2 answers:

scoray [572]3 years ago

7 0

Answer: $2Ca(OH)_2(aq)+2FeCl_3(aq)\rightarrow CaCl_2(aq)+2Fe(OH)_2(s)$

Explanation: A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

The reactions in which one of the product is formed as a solid are called as precipitation reactions.

a) $2Cr(NO_3)_3(aq)+3FeSO_4(aq)\rightarrow Cr_2(SO_4)_3(aq)+3FeNO_3(aq)$

b) $2RbF(aq)+CuSO_4(aq)\rightarrow Rb_2(SO_4)(aq)+CuF_2(aq)$

c) $2Ca(OH)_2(aq)+2FeCl_3(aq)\rightarrow CaCl_2(aq)+2Fe(OH)_2(s)$

Brrunno [24]3 years ago

6 0

2Ca(OH)2(aq) + 2FeCl3(aq) on the dead locs

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HELP!!!! A glass flask containing 100 milliliters of water is sealed with a rubber stopper and placed on a burner. After a while

kondor19780726 [428]

Answer: A closed system, because energy can enter or leave the container, but the water molecules cannot

Explanation:

Open system: In this system energy and matter both have access to their surroundings beyond the boundaries of system. .

Closed system :In this type system only energy has an access to its surroundings beyond the boundaries of system but not matter.

Isolated system:In this type system exchange of both energy and matter are restricted to move outside the boundaries of system.

According to question, the system given is a closed system because energy is transferred from the burner to glass flask and from the glass flask to the water (matter). But water molecules are only getting condensed on the inside surface of the flask that is exchange of matter beyond the boundaries of the system is restricted. Hence, closed system ,A closed system, because energy can enter or leave the container, but the water molecules cannot.

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2 years ago

What 2 properties make capillary action possible

Natali5045456 [20]

Cohesion and adhesion

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3 years ago

What are the forces that hold sodium and chloride ions together?

Phantasy [73]

Sodium is a metal, Chloride is a non-metal.

Right off the bat, you know that in order for both of these atoms to achieve a full valence shell that the metal has to lose electrons, and the non-metal has to gain them.

Therefore, you have the transfer of electrons in this bond in order to form ions.
Na+ and Cl-. This transfer of electrons in a bond is called an {{ Ionic Bond}}

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3 years ago

We can prove a theory to be correct by performing the right experiment. False or true

eimsori [14]

Answer:

true

Explanation:

because if you find the right answer that proves the theory to be correct.

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3 years ago

Use the drop-down menus to complete each statement.

aleksley [76]

Explanation:

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The planets which have rocky composition are listed below mercury, venus, earth, and mars and they are smaller in size.

3. Revolve quickly around the Sun:

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4. Rotate quickly on their axes:

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2 years ago

Read 2 more answers