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notka56 [123]
3 years ago
8

If you were about 10 kilometers above earth, what would the pressure approximately be?

Chemistry
1 answer:
Sliva [168]3 years ago
7 0

Answer:

About 25 kPa  

Explanation:

Pressure decreases with height above sea level.

The calculation is rather complicated, so I will refer to the figure below.  

It shows that the pressure at 10 km is about 25 kPa.

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Will give brainlest once two answer!!!
Vikentia [17]

C.)Cool air near the surface forms high-pressure areas; warm air forms low-pressure areas.

Explanation:

The relationship between air temperature and high and low pressure air is such that cool air near the surface forms high-pressure areas and warm air forms low pressure areas.

  • Cool air is closer to the surface because it has low kinetic energy to move. It is denser.
  • Warm air rises sharply away from the ground surface.
  • They form low pressure areas and their molecules are wide apart due to their high kinetic energy. The air is less dense.

learn more;

Kinetic energy brainly.com/question/9924094

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7 0
3 years ago
3. What characteristics of lumpfish make them unique? (Select all that apply.)
stiks02 [169]

Answer:

the male carries the babies

the male guards the nest

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5 0
3 years ago
Read 2 more answers
When an endothermic chemical reaction (the system) occurs inside a calorimeter containing water (the surroundings) and no heat e
Nostrana [21]

Answer:

b. Heat flows from the surroundings to the system and the temperature of the water decreases.

Explanation:

The laws of thermodynamics lets us know that energy is neither created nor destroyed but can be converted from one form to another. Also, energy transfer does accompany chemical reactions in the form of heat.

For an endothermic reaction, heat is absorbed by the system from the surroundings. This leads to a drop in the temperature of the surroundings as energy is removed.

This implies that the water temperature decreases.

8 0
3 years ago
What is the molarity of a solution that contains 1000.0 mg of AgNO3 that has been dissolved in 500 mL of water
Vaselesa [24]

0.012moldm⁻³

Explanation:

Given parameters:

Mass of AgNO₃  = 1000mg

Volume of water = 500mL

Unknown:

Molarity of solution  = ?

Solution:

The molarity of a solution is the number of moles of a solute dissolved in volume of solvent.

 Molarity = \frac{xnumber of moles}{Volume}

 

Number of moles of AgNO₃  = ?

   Number of moles = \frac{mass}{molar mass}

Molar mass of AgNO₃ = 108 + 14 + 3(16) = 170g/mol

   convert mass to g;

      1000mg = 1g

 Number of moles  = \frac{1}{170}  = 0.00588moles

   convert the given volume to dm³;

       1000mL  = 1dm³;

        500mL = 0.5dm³

Now solve;

  Molarity = \frac{0.00588}{0.5}  = 0.012moldm⁻³

learn more:

Molarity brainly.com/question/9324116

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4 0
3 years ago
Which atom would it be most difficult to remove an electron from
Norma-Jean [14]
I would be difficult to remove an electron from a Noble or Inert Gas (also known as the group 8 or 0 elements).  This is because they all have filled outermost shells and as such the outermost shell would be held tightly to the nucleus and as such make it difficult to remove.  Examples Helium, Neon, Argon, Xenon, Krypton and Radon 
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