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Aleonysh [2.5K]
3 years ago
13

What is the least dense layer of the earth

Chemistry
2 answers:
Darya [45]3 years ago
6 0
The least dense layer of the earth is the crust.
Dafna1 [17]3 years ago
3 0
The least dense layer of Earth is the topsoil, which is in the <u><em>crust.
</em></u><em />Hope this helps!<u><em>
</em></u>
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Whats factors create surface currents?
AysviL [449]

Answer:

wind direction, landforms, and surface winds.

6 0
3 years ago
The density of h2 gas in a rigid container is 0.135 g/l at a given temperature. what is the pressure of hydrogen in the flask if
Roman55 [17]
Let's assume that H₂ gas has ideal gas behavior.

Then we can use ideal gas formula,
PV = nRT

Where,
   P = Pressure of the gas (Pa)
   V = Volume of the gas (m³)
   n = moles of the gas (mol)
  R = Universal gas constant (8.314 J K⁻¹ mol⁻¹)
  T = Temperature in Kelvin (K)

But,
 n = m/M,
Where m is mass of the gas (kg) and M is molar mass of the gas (kg/mol)

Hence PV= mTR / M
              P = mTR / VM = (m/V)TR / M

m/V = d (density (kg/m³)

By rearranging,
               P = dRT / M

d = 0.135 g/L = 0.135 kg/m³
T = (273 + 201) K = 474 K
M = 2 g/mol = 2 x 10⁻³ kg/mol

From substitution,
     P = 0.135 kg/m³ x 8.314 J K⁻¹ mol⁻¹ x 474 K / 2 x 10⁻³ kg/mol
     P = 266006.43 Pa
     P = 266 kPa

Hence the pressure of H₂ gas at 201⁰C is 266 kPa


8 0
4 years ago
Which will most likely result if the levels of dissolved oxygen decrease in a body of water?
Lerok [7]

Answer:

B) Native fish species will begin to decrease in population size.

Hope it helps:D

5 0
3 years ago
Read 2 more answers
WHAT IS the density at 27degrees celsius of 30ml of a. liquid that has a mass of 2.6g?
Art [367]

Answer:

The answer is

<h2>0.087 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}

From the question

mass of liquid = 2.6 g

volume = 30 mL

The density is

density =  \frac{2.6}{30}  \\  = 0.08666666...

We have the final answer as

<h3>0.087 g/mL</h3>

Hope this helps you

6 0
3 years ago
What is the percent yield of alum if 0.4000 grams of aluminum is used in the synthesis of alum and 4.8946 grams of alum is actua
slamgirl [31]
% yield = actual yield/ theoretical yield x 100%

4.8946 / 0.4 = 12.2365 

% yield = 12.2365 x 100 = 1223.65%
7 0
3 years ago
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