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
Anestetic [448]
3 years ago
13

If a laser operating at a wavelength of 488 nm and a power of 123.0 mW is turned on for 18.73 minutes, how many photons has it e

mitted?
Chemistry
1 answer:
Verizon [17]3 years ago
7 0

Answer:

3.39e+20

Explanation:

You might be interested in
Approximately 1 mL of two clear, colorless solutions-0.1 M Ba(NO3)2 and 0.1 M Na2SO4- were combined. Upon mixing, a thick, milky
murzikaleks [220]

Answer: balanced chemical equation: Ba(NO_3)_2(aq)+Na_2SO_4(aq)\rightarrow BaSO_4(s)+2NaNO_3(aq)

Net ionic equation : Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

The balanced chemical equation is:

Ba(NO_3)_2(aq)+Na_2SO_4(aq)\rightarrow BaSO_4(s)+2NaNO_3(aq)

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

Ba^{2+}(aq)+2NO_3^-(aq)+2Na^+(aq)+SO_4^{2-}(aq)\rightarrow  BaSO_4(s)+2Na^+(aq)+2NO_3^-(aq)

The ions which are present on both the sides of the equation are sodium and nitrate ions and hence are not involved in net ionic equation.

Hence, the net ionic equation is Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)

4 0
3 years ago
ANSWER QUICK
Novosadov [1.4K]

Answer:

1.8

Explanation:

8 0
2 years ago
Read 2 more answers
What is the name of this Acid? H2CO3*
zzz [600]
ANSWER: carbonic acid.
7 0
3 years ago
Read 2 more answers
Explain How does its structure affect its function​
Slav-nsk [51]

Answer:

What are we talking about here?

Explanation:

3 0
3 years ago
Is phosphorus tribromide a covalent compounds or ionic compounds
daser333 [38]

Phosphorus tribromide is a covalent compound because they share electron pairs.

6 0
3 years ago
Other questions:
  • Which of the following ions came from an atom that lost two electrons
    10·1 answer
  • What chemical element did hennig brand discover and what was he boiling down when he discovered it
    15·1 answer
  • What affect would a warm body of water have on the coastline?
    7·1 answer
  • If you need to produce X-ray radiation with a wavelength of 1 Å. a. Through what voltage difference must the electron be acceler
    15·1 answer
  • Why is co2 collected by downward delivery in preparation​
    7·1 answer
  • Plz help!!!!!! will mark as brainliest!!!!!!!!
    15·2 answers
  • What volume of 1.10 M SrCl2 is needed to prepare 525 mL of 5.00 mM SrCl2?
    8·1 answer
  • An 80.0-gram sample of water at 10.0°C absorbs 1680 Joules of heat energy. What is the final temperature of the water? a 50.0°C
    10·1 answer
  • SOMEONE PLS HELP
    5·1 answer
  • Which of the following statements correctly describes a difference between mechanical waves and electromagnetic waves?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!