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Rasek [7]
3 years ago
14

Tell me what you think in galaxies do aliens exist tell me why and your view

Chemistry
1 answer:
mart [117]3 years ago
4 0

Answer:

I do not know. I think there is .as we are the living creatures in this earth. maybe aliens are creatures of other planet or galaxies. I am not scientists to prove it.sorry.

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The data were collected over five spring seasons. What is the difference between the number of frogs in the pond when the rainfa
Lunna [17]

Answer: they like deep water

Explanation: they do

3 0
3 years ago
Identify each charge of the subatomic particles ? <br><br> Help me please ASAP
baherus [9]

Answer:

Particle: Charge:

Proton +1

Neutron 0

Electron -1

6 0
3 years ago
As a gas changes to a solid, energy<br> A. is not used.<br> B. is released.<br> C. is absorbed.
pogonyaev

Answer:

B

Explanation:

Energy is released, when a gas changes to solid

7 0
3 years ago
If 1.3 L of C3H8 combusts according to the equation below, how much CO2 will be produced?
SCORPION-xisa [38]

Answer:

0.162 moles of CO₂ are produced by this reaction

Explanation:

The reaction is:

C₃H₈(g) + 5O₂(g)  →  3CO₂(g) +4H₂O(g)

As we have the volume of propane, we need to know the mass that has reacted, so we apply density's concept.

Density = Mass / Volume → Density . Volume = Mass

0.00183 g/mL . 1300 mL = Mass → 2.379 g

We determine the moles → 2.379 g . 1mol / 44 g = 0.054 moles

Ratio is 1:3. 1 mol of propane can produce 3 moles of dioxide

Then, 0.054 moles may produce (0.054 .3)/1 = 0.162 moles

6 0
3 years ago
The energy of a photon is ________ proportional to its wavelength. The energy of a photon is ________ proportional to its freque
topjm [15]

Answer: Inversely  ,   Directly

Explanation:

The energy of a photon is inversely proportional to its wavelength and directly proportional to its frequency.

As can be seen from this equation;

E = hv  = h c / ∧

Where E = Energy of a photon

           v = Frequency

           h = Planck Constant

           c = speed of light

           ∧  = Wave length

4 0
4 years ago
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