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Sidana [21]
3 years ago
5

Consider the reaction below Na2CO3 (aq) + CaCl2 (aq) CaCO3 (s) + 2NaCl (aq) If the releases 39.4 kJ of energy, how many kilocalo

ries does it release? (1 cal = 4.184 J) (Round off answer to 2 decimal place)​
Physics
1 answer:
denis23 [38]3 years ago
3 0

Answer: 9.42

Explanation: yes

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How do Earth spheres interact?
Masja [62]
All the spheres interact with other spheres. For example, rain (hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and rivers that provide drinking water for wildlife and humans as well as water for plant growth (biosphere). ... Flooding rivers wash away soil.
5 0
2 years ago
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The salinity of the oceans has been relatively constant throughout geologic time because salt is removed at the same rate at whi
tia_tia [17]

True

Explanation:

It is correct to say that the salinity of the oceans has been relatively constant throughout geologic time because salt is removed at the same rate it has been added.

Salinity is the amount of dissolved salt found in the ocean. It is the degree of saltiness of the ocean.

  • The rate at which salt has been added into the ocean over the years through geologic time has been very constant.
  • Most salts in the ocean comes from land.
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  • The salinity of ocean has once been used to date the age of the earth.

learn more:

Salinity brainly.com/question/10491444

#learnwithBrainly

5 0
3 years ago
yo this is due tomorrow help ya girl out : if a 2kg mass is accelerating at a rate of 2m/s^2 on a frictionless surface. how much
krok68 [10]
We Know, F = m.a
Here, m = 2 Kg
& a = 2 m/s²

Substitute for it, 
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F = 4 Kgm/s²
8 0
3 years ago
The higher an electromagnetic wave's frequency, the lower its
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Answer:

The higher an electromagnetic wave's frequency, the lower its wavelength

~batmans wife dun dun dun...

7 0
3 years ago
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Please ans fast I will mark brainliest <br><br>For sure
mixas84 [53]
Well for starters, that means that the air in the sky is very cold, and has a lower temperature. Since it is super dark, it is colder than the polar bear.

The polar bear is cold. Not as cold as the sky, and not as warm as the mouth and eyes, but it is still very cold. This is probably because it lives in a snowy and cold climate.

The polar bears eyes and mouth are warm. This is because, the spots where the eyes, mouth, and nose are is a very light shade. This concludes that those spots on the polar bear are warm.
6 0
3 years ago
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