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
fenix001 [56]
2 years ago
5

What element glows in sign's when excited

Chemistry
1 answer:
ser-zykov [4K]2 years ago
6 0

Answer:

The element that glows in signs is xenon.

Explanation:

Xenon is a chemical element with the symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas found in Earth's atmosphere in trace amounts. Xenon is used in flash lamps, arc lamps, and as a general anesthetic. Xenon emits a blue or lavenderish glow when excited by electrical discharge, it emits a band of emission lines that span the visual spectrum, but the most intense lines occur in the region of blue light, producing the coloration.

You might be interested in
Which group of elements are considered to be in the same family?
mash [69]
A. helium, neon and argon, because they are in the same group or column
8 0
3 years ago
1. Write formulas for the binary ionic compounds formed between
adell [148]

Answer:

a) KI

b) MgCl2

c) Na2S

d) Al2S3

e) AlN

Explanation:

8 0
3 years ago
Read 2 more answers
PLZ HELLLLPPPP
coldgirl [10]

D. The nucleus is the control center of the cell


6 0
3 years ago
Heat never travels from a cooler object to a warmer object.
prohojiy [21]

Answer:

I would say False.

4 0
2 years ago
g When 2.50 g of methane (CH4) burns in oxygen, 125 kJ of heat is produced. What is the enthalpy of combustion (in kJ) per mole
Anna [14]

Answer:

-800 kJ/mol

Explanation:

To solve the problem, we have to express the enthalpy of combustion (ΔHc) in kJ per mole (kJ/mol).

First, we have to calculate the moles of methane (CH₄) there are in 2.50 g of substance. For this, we divide the mass into the molecular weight Mw) of CH₄:

Mw(CH₄) = 12 g/mol C + (1 g/mol H x 4) = 16 g/mol

moles CH₄ = mass CH₄/Mw(CH₄)= 2.50 g/(16 g/mol) = 0.15625 mol CH₄

Now, we divide the heat released into the moles of CH₄ to obtain the enthalpy per mole of CH₄:

ΔHc = heat/mol CH₄ = 125 kJ/(0.15625 mol) = 800 kJ/mol

Therefore, the enthalpy of combustion of methane is -800 kJ/mol (the minus sign indicated that the heat is released).

3 0
2 years ago
Other questions:
  • An alkaline battery produces electrical energy according to the following equation.
    6·1 answer
  • Which data table below correctly describes the parts of an atom?
    9·1 answer
  • Which of the following can be the product of a neutralizationaction?
    9·2 answers
  • 8255 min = _?_days<br> I need help please
    15·1 answer
  • Which has more gravity<br> A. Earth<br> B. Moon<br> C .Sun<br> D. Saturn
    15·2 answers
  • 55. What is total no of shared electrons in ethane?
    15·1 answer
  • Determine the oxidation number of C in H​
    15·1 answer
  • Increasing which factor will cause the gravitational force between two objects to decrease?
    5·2 answers
  • How do you revive a person
    5·2 answers
  • Draw the structure of the major nitration product from the reaction of nitric acid with 1,3‑dimethylbenzene. Show all formal cha
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!