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Juliette [100K]
3 years ago
10

What causes the colors observed during a flame test

Chemistry
2 answers:
Masteriza [31]3 years ago
4 0
Electrons are changing energy levels.
Marrrta [24]3 years ago
3 0

By using flame test we can identify the elements because colors which are given by elements with flame test are unique.

During the flame test, the electrons of the atom which are in ground state absorb energy and go to upper level. This is called electron excitation. Excited electrons are unstable. Hence, they come back to the ground state by emitting the energy as photons. If that released energy has a frequency which belongs to visual light, then that wave gives a color.

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Which compound is produced by a neutralization?
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Explanation:

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6 0
3 years ago
A 220.0-mL sample of helium gas is in a cylinder with a movable piston at 105 kPa and 275K. the piston is pushed until the sampl
nignag [31]
Using the general gas equation:

P₁V₁/T₁ = P₂V₂/T₂

(105*220)/275 =   (P₂*95)/310

(105*220)*310/275  = P₂*95

 (105*220*310)/(275*95)  =  P₂

       274.11        =  P₂

       P₂  = 274.11 kPa

       New Pressure =  274.11 kPa 
3 0
4 years ago
Does a chemical reaction in a closed or open best supports the law of conservation of matter
Sunny_sXe [5.5K]

Answer:

Normally, it explains that matter cannot be created or destroyed. It demonstrates different chemical reactions that help show the different transformations of the matter but will never destroy it or create it.

4 0
3 years ago
The molality of a solution that is made by dissolving a certain mass of benzene in 20.6g of carbon tetrachloride is 0.529m. How
antiseptic1488 [7]
Molality of solution = 0.529 m

mass solvent in kg = 20.6 g => 20.6 / 1000 => 0.0206 kg

number of moles = molality x mass solvent

= 0.529 x 0.0206 => <span> 0.0108 mol benzene 
</span>
hope this helps!

6 0
3 years ago
Read 2 more answers
What is the chemical formula for Sodium Floride?
UkoKoshka [18]
The chemical formula for Sodium Fluoride is NaF. 
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