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
Ksenya-84 [330]
3 years ago
9

Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at 656.28 nm is seen to be shift

ed to 656.08 nm. Is the star moving towards or away from us, or can we not tell?
Chemistry
1 answer:
snow_lady [41]3 years ago
4 0

Answer:

The Star is moving towards us

Explanation:

Since there is a reduction in shift from the hydrogen line.

You might be interested in
Please help. will give brainliest and 100 pts​
Alex777 [14]

Answer:

1.

%K = 31.904%

%Cl = 28.930%

%O = 39.166%

2.

Hg = 80.69/ 200.59 = 0.40/0.2 = 2

S = 6.436/ 32.07 = 0.20/0.2 = 1

O = 12.87/ 16.00 = 0.80/0.2 = 4

Hg2SO4 is the empirical formula

Explanation:

brainliest please?

8 0
4 years ago
Read 2 more answers
Electronegativity values increase from left to right across a period in the periodic table because there is an increase in the c
Mademuasel [1]
First, let us define Electronegativity. Electronegativity is "the ability of an atom to attract electrons." In addition, electronegativity increases in elements from left to right, while on the other hand, electronegativity decreases from top to bottom in an element group. It decreases because the atomic radius increases as we go downward an element in the group.
5 0
4 years ago
What causes a substance to change states of matter?
Aleks04 [339]
The answer is HEAT this should help u my guy
6 0
3 years ago
How much energy does cameron need to add to raise the temperature of a 0.500-kg sample of silver from 200 k to 205 k? the specif
zzz [600]

energy to raise temperature is 590 J

Given:

mass of silver sample = 0.5 kg

initial temperature = 200 k

final temperature = 205 k

specific heat of silver = 236 j/kgk

To Find:

energy to raise temperature

Solution: The heat energy required to raise the temperature of of a substance through is called its specific heat capacity.

Q = cmΔt

where c= constant of proportionality, called specific heat capacity of the body

Q = mass x specific heat x ∆t

= 0.5 x 236 x ( 205-200 )

= 590 J

So, energy to raise temperature is 590 J

Learn more about Specific heat capacity here:

brainly.com/question/16559442

#SPJ4

5 0
2 years ago
Four gases were combined in a gas cylinder with these partial pressures: 3.5 atm N2, 2.8 atm O2, 0.25 atm Ar, and 0.15 atm He. W
liq [111]

The total pressure is 6.7 atm.  The mole fractions of O₂ and Ar are 0.42 and 0.037.

<em>p</em>(Tot) = <em>p</em>(N₂) + <em>p</em>(O₂) + <em>p</em>(Ar) + <em>p</em>(He) = 3.5 atm + 2.8 atm + 0.25 atm + 0.15 atm = 6.7 atm

χ(O₂) = p(O₂)/p(Tot) = 2.8 atm/6.7 atm = 0.42

χ(Ar) = p(Ar)/p(Tot) = 0.25 atm/6.7 atm = 0.037

6 0
4 years ago
Read 2 more answers
Other questions:
  • If a solution of glucose has a concentration of 0.500 M, how many moles of are in 8.00 L of
    10·1 answer
  • If you multiply 1/2 X 1/2 what will you get as you answer
    14·2 answers
  • Calculate the density of the cube:<br><br> mass = 150.0 g<br><br> volume = 16.7 cm3
    8·1 answer
  • What might appear in a plains ecoregion after a heavy rain
    8·1 answer
  • Why do neutrons have no effect on the charge of on atom
    9·1 answer
  • A redox reaction employed in an electrochemical cell has a negative . Which statement is true? a) E∘cell is positive b) K&gt;1 E
    7·1 answer
  • Which Carbon is the triple bound attached to in 6-ethyl-2-octyne?
    7·1 answer
  • Barb has a bucket of snow with a mass of 20 kg. After the snowmelts,what will most likely be the mass of the bucket of water?
    10·2 answers
  • Whats the diffrence beetween fluids and nonfluids
    12·2 answers
  • 24. Predict the ions that form when magnesium(group IIA) and nitrogen (group VA) react::
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!