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Luda [366]
2 years ago
10

Who is the first to write an atomic theory based upon experimentation?

Chemistry
1 answer:
koban [17]2 years ago
4 0

Answer:

John Dalton

John Dalton, an English chemist and meteorologist, is credited with the first modern atomic theory based on his experiments with atmospheric gases.

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What is the net ionic equation for the reaction that occurs when aqueous copper(II) sulfate is added to excess 6-molar ammonia?a
Karolina [17]

Answer:

c. 2NH₃ + 2H₂O  + Cu²⁺ → Cu(OH)₂(s) + 2NH₄⁺

Explanation:

A net ionic equation is a chemical equation that list only the species that are involved in the reaction.

The reaction of ammonia with copper(II) sulfate CuSO₄ in water is:

2NH₃ + 2H₂O  + CuSO₄ → Cu(OH)₂(s) + 2NH₄⁺ + SO₄²⁻

In an ionic equation, salts are written as ions, that means CuSO₄ must be written as Cu²⁺ + SO₄²⁻. That is:

2NH₃ + 2H₂O  + Cu²⁺ +<u> SO₄²⁻</u> → Cu(OH)₂(s) + 2NH₄⁺ + <u>SO₄²⁻</u>

As in a net ionic equation you must list only the species involved in the reaction (The underlined species don't react), the net ionic equation is:

<em>c</em>. <em>2NH₃ + 2H₂O  + Cu²⁺ → Cu(OH)₂(s) + 2NH₄⁺</em>

<em></em>

I hope it helps!

7 0
3 years ago
How many Red data lists were compiled for South Africa?​
e-lub [12.9K]

Answer:

Don't know if I know itat all

Explanation:

what is red data list

6 0
2 years ago
The decayed organic material that gives soil its dark brown or black color is called
sergiy2304 [10]
Option B. Humus. Its dark color is due to the high content of carbon.

3 0
3 years ago
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\al(s) + 3agno3(aq) → al(no3)3(aq) + 3ag(s) this equation represents which type of chemical reaction?
Savatey [412]
 Al(s)  + 2AgNO3(aq) = Al(NO3)3(aq) + 3 Ag (s) 


is a  single  replacement reaction

 A  single  replacement  reaction  is a type  of chemical reaction were element react with a compound  and  the element take  place  of another element in that  compound.  In the reaction above Aluminium  (Al) take the place of  silver (Ag)  from it compound.that is AgNO3. single  replacement reaction is possible because  aluminium   is  in high in reactivity   series    as compared to silver.
3 0
3 years ago
ASAP, This question is 30 points. Please help me!
Nat2105 [25]

Answer:

1. A magnetic field

2. the former piece will lose electrons take on a positive charge and the latter piece will gain electrons and take on a negative charge.

3. parallel (im not really sure)

Explanation:

4 0
3 years ago
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