1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
worty [1.4K]
3 years ago
6

Explain (in words) why Li produces spectral lines and why it appears pink in the firework?

Chemistry
1 answer:
Brilliant_brown [7]3 years ago
6 0

Answer:

Color tells us about the temperature of a candle flame. The inner core of the candle flame is light blue, with a temperature of around 1670 K (1400 °C). That is the hottest part of the flame. The color inside the flame becomes yellow, orange, and finally red. The further you reach from the center of the flame, the lower the temperature will be. The red portion is around 1070 K (800 °C).

The orange, yellow, and red colors in a flame do not relate only to color temperature. Gas excitations also play a major role in flame color. One of the major constituents in a burning flame is soot, which has a complex and diverse composition of carbon compounds. The variety of these compounds creates a practically continuous range of possible quantum states to which electrons can be excited. The color of light emitted depends on the energy emitted by each electron returning to its original state.

Within the flame, regions of particles with similar energy transitions will create a seemingly continuous band of color. For example, the red region of the flame contains a high proportion of particles with a difference in quantum state energies that corresponds to the red range of the visible light spectrum.

Explanation:

You might be interested in
Question 2 of 10
Serjik [45]

A) 02(9)

hope it help you(•‿•)

4 0
3 years ago
Read 2 more answers
A solution is initially 0.10m in mg2+(aq) and 0.10m in fe2+(aq). solid naoh is slowly added. what is the concentration of fe2+ w
dexar [7]

Mg(OH)₂  ⇄ Mg²⁺   +   2 OH⁻

Ksp = [Mg²⁺] [OH⁻]²

6.0 x 10⁻¹⁰ = 0.10 x [OH⁻]²

[OH⁻] = 7.746 x 10⁻⁵ M

when Mg(OH)₂ 1st precipitates, [OH⁻] = 7.746 * 10⁻⁵ M

Fe(OH)₂   <—>   Fe²⁺   +   2OH⁻

Ksp = [Fe²⁺] [OH⁻]²

7.9 x 10⁻¹⁶ = [Fe²⁺] x (7.746 x 10⁻⁵)²

[Fe²⁺] = 1.32 x 10⁻⁷ M

Answer: 1.32 x 10⁻⁷ M

5 0
3 years ago
Ammonia chemically reacts with oxygen gas to produce nitric oxide and water . What mass of ammonia is consumed by the reaction o
prohojiy [21]
The chemical equation represents the reaction describes is;
4NH3 + 5O2 = 4NO + 6H2O

Therefore 4 moles of NH3 reacts with 5 moles of O2.
1 mole of O2 (molar mass) = 2 * 16 = 32g.
5 moles of O2 = 5 * 32 = 160g
4 moles of NH3 = 4 (14 + 3*1) = 68g

Therefore, 68g of NH3 reacts with 160g of O2.
But, we have only 4.5 g of oxygen.
68g reacts with 160g
Xg reacts with 4.5
X = 68*4.5 / 160 = 1.9125g
6 0
4 years ago
A chemical change occurs when a substance changes phase.<br><br> True<br> False
podryga [215]
It is true because a chemical change is when something changes form
7 0
4 years ago
Read 2 more answers
okay so a teacher at my school got arrested yesterday... can someone tell me what all of it means lol? like we know she had drug
lbvjy [14]

Answer:

She might been a drug dealer always on the streets alot

4 0
4 years ago
Other questions:
  • A hydrogen atom can be in the 1S state, whose energy we'll call 0, the 2S state, or any of 3 2P states. The 2S and 2P states hav
    15·2 answers
  • Sarah needs to replace part of the metal railing on her deck and wants the new railing to match the existing railing. However, s
    10·1 answer
  • This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment. a.b.c.
    6·2 answers
  • Which of these is a typical property of a substance that is composed of atoms that are held together by covalent bonds?
    11·1 answer
  • Can anyone tell me about sulfuric acid in shampoo/soap?
    14·1 answer
  • The bonding electrons in a non-polar compound are:
    10·1 answer
  • In order to prepare very dilute solutions, a lab technician chooses to perform a series of dilutions instead of measuring a very
    6·1 answer
  • what is the volume of the air in a balloon that occupies 0.730 L at 28.0 c if the temperature is lowered to 0.00 C
    14·1 answer
  • What will occur if two reactant molecules collide but do not have the right alignment?
    8·2 answers
  • Fre3 points <br>Leave a random fact
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!