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xxMikexx [17]
2 years ago
11

How is excitation in spectroscopy brought about​

Chemistry
1 answer:
DedPeter [7]2 years ago
6 0

Answer: the exciation of molecules is brount by absorption of energy  in spectroscpy

Explanation:

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State any two mixture that can separated using the method? ​
algol13

Answer:

  • distillation
  • fillteration
  • threshing
  • evaporation
7 0
3 years ago
Write a balanced net ionic equation for the following double replacement reaction
shtirl [24]

Answer:

Ba²⁺(aq) + SO₄²⁻(aq) ⟶ BaSO₄(s)  

Explanation:

There are three steps you must follow. You must write the:

  • Molecular equation
  • Ionic equation
  • Net ionic equation

A. Molecular equation

BaCl₂(aq) + Na₂SO₄(aq) ⟶ BaSO₄(s) + 2NaCl(aq)

B. Ionic equation

You write all the soluble substances as ions.

Ba²⁺(aq) + 2Cl⁻(aq) + 2Na⁺(aq) + SO₄²⁻(aq) ⟶ BaSO₄(s) + 2Na⁺(aq) + 2Cl⁻(aq)

C. Net ionic equation

To get the net ionic equation, you cancel the ions that appear on each side of the ionic equation.

Ba²⁺(aq) + <u>2Cl⁻(aq) </u>+ <u>2Na⁺(aq</u>) + SO₄²⁻(aq) ⟶ BaSO₄(s) + <u>2Na⁺(aq)</u> + <u>2Cl⁻(aq) </u>

The net ionic equation is

Ba²⁺(aq) + SO₄²⁻(aq) ⟶ BaSO₄(s)  

3 0
3 years ago
A compound's molecular formula must always be different than the compound's empirical formula. TRUE FALSE
Juli2301 [7.4K]

Answer: False

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

Example: CH_4 has similar molecular formula and empirical formula as the elements are already present in simplest of the ratios.

C_2H_2 has molecular formula of C_2H_2 but CH as the empirical formula.

5 0
3 years ago
What best describes the dropping height of a ball that bounced back up to a height of 45 centimeters?
katen-ka-za [31]

Answer:

I don't know and I don't understand

Explanation:

I don't know and I don't understand

sorry

sorry for not being able to answer your question

3 0
3 years ago
In a chemical equation the sum of the masses
monitta
The sum of the masses of the reactants must equal the sum of the masses of the products; as required by 
the Principle of Conservation of Mass. 
5 0
3 years ago
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