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
katrin2010 [14]
3 years ago
8

A light year is a measurement of ___________. Which word best completes the sentence?

Chemistry
2 answers:
sattari [20]3 years ago
5 0

Answer:

distance

Explanation:

(=^w^=) it is literally just the distance a beam of light moves in one year

pogonyaev3 years ago
5 0

Answer:

It is distance( they were right)

Explanation:

Took test

You might be interested in
Determine the amount of moles in 6.36x10^25 molecules of H2O
photoshop1234 [79]
<span>(6.36x10^25)/(6.02*10^23) is approximately 105.6 moles</span>
3 0
3 years ago
Water vapor particles are most likely to phase change into liquid particles if the vapor particles come into contact with
dalvyx [7]
Water vapour particles are most likely to phase change into liquid particles if the vapour particle come into contact with A COOLER SURFACE.
For a liquid to change to gas, it has to absorb enough energy to break the chemical bond that is holding the liquid particles together. When a liquid change to gas it is called vaporization. When a vapour, for instance water vapour comes in contact with cooler surfaces they lose energy and get converted back to the liquid state; this process is called condensation.
8 0
3 years ago
What element has 47 protons in its nucleus?
sesenic [268]

Answer:

b). silver (Ag)

Explanation:

If you look at the periodic table, you just need to look at the atomic number of the element, because the atomic number tells you how many protons there are in the nucleus of the element.

But do be careful because some periodic tables have the molar mass at the top left corner, but the one I use has the atomic number at the top left corner, so make sure you look for the atomic number and not the molar mass.

5 0
3 years ago
The enthalpy of vaporization (ΔH°vap) of benzene is 30.7 kJ/mol at its normal boiling point of 353.3 K. What is ΔS°vap at this t
vazorg [7]

<u>Answer:</u> The correct answer is Option c.

<u>Explanation:</u>

Vaporization is defined as the physical process in which liquid particles get converted to gaseous particles.

Liquid\rightleftharpoons Gas

The value of standard Gibbs free energy is 0 for equilibrium reactions.

To calculate \Delta S^o_{vap} for the reaction, we use the equation:

\Delta S^o_{vap}=\frac{\Delta H^o_{vap}}{T}

where,

\Delta S^o_{vap} = standard entropy change of vaporization

\Delta H^o_{vap} = standard enthalpy change of vaporization = 30.7 kJ/mol = 30700 J/mol    (Conversion factor: 1 kJ = 1000 J)

T = temperature of the reaction = 353.3 K

Putting values in above equation, we get:

\Delta S^o_{vap}=\frac{30700J/mol}{353.3K}=86.9J/(mol.K)

Hence, the correct answer is Option c.

8 0
3 years ago
Particle Q has 16protons, 17neutrons and 18 electrons. Particle Q is:
Anna [14]

Answer:

b

Explanation:

give me brainelest pls

4 0
2 years ago
Other questions:
  • What did galileo say about the sun
    14·1 answer
  • A chemistry student weighs out 0.120 g of acetic acid into a 250. mL volumetric flask and dilutes to the mark with distilled wat
    13·2 answers
  • PLZ HELP WILL MARK BRAINLIEST I NEED INSTANT HELP THIS IS A MAJOR GRADE I THINK I KNOW THE ANSWER BUT NOT SURE IF IT'S RIGHT. PL
    5·1 answer
  • At 400 k, the equilibrium constant for the reaction is kc = 7.0. br2 (g) + cl2 (g) 2brcl (g) a closed vessel at 400 k is charged
    5·1 answer
  • Where should you place the title when constructing a graph?
    12·2 answers
  • Explain archimedic principal with neat sketch ​
    10·1 answer
  • Which statement best explains why an object appears green in sunlight?
    10·1 answer
  • If I have 450 grams of iorn how many miles of it do I have
    11·1 answer
  • Why is the top ruler more reliable in measuring length than the bottom ruler?
    7·2 answers
  • How do you revive a person
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!