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Stells [14]
3 years ago
11

What temperature and density changes occur in convection cells of a fluid or plastic material?

Chemistry
2 answers:
exis [7]3 years ago
4 0
Hello! The warmer temperature in a fluid rises and becomes less dense as the cooler temperature sinks and becomes more dense. Hope this helps! :)
saw5 [17]3 years ago
3 0

When the cold areas are warmed up, their density drops and they arise. Finally, they cool, sink and replicate the manner all over anew. The decision is a circular motion or current in the running part of the mantle. This method is described as convection.

<h3>Explanation:</h3>

The great point to retain is that heat flows from heated areas to cool areas. In the asthenosphere, you have unusual areas that are warmer than others. Convection is also subject for currents in the air. Hot air (a gas) increases near the equator and continues to the poles, where it cools, grows thicker and descends.

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What is the true ratio of atoms in a molecule or formula unit called?
Colt1911 [192]

Answer:

O the molecular formula

Explanation:

The true ratio of atoms in a molecule or formula unit is called the molecular formula.

The molecular formula of a compound shows the true number of atoms that are combining to form a compound.

For example, the molecular formula of water is H₂O.

  • Empirical formula of a compound is its simplest ratio.
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3 0
3 years ago
How many moles of S are in 22.4 g of C6H10S
PolarNik [594]

Hey there!

Get molar mass of C₆H₁₀S:

C: 6 x 12.01

H: 10 x 1.008

S: 1 x 32.065

------------------

144.205 g

To find the amount of moles we have, divide 22.4 by 144.205. Get 0.155.

There are 0.155 moles of S.

Hope this helps!

3 0
3 years ago
When 12.71 g of copper react with 8.000 g of sulfur, 14.72 g of copper(I) sulphide is produced. What is the percentage yield in
Citrus2011 [14]
2Cu + S = Cu₂S

n(Cu)=m(Cu)/M(Cu)
n(Cu)=12.71/63.55=0.2 mol

n(S)=m(s)/M(S)
n(S)=8.000/32.01=0.25 mol

Cu:S  2:1  
0.2 mol : 0.25 mol copper deficiency, sulphur in excess

theoretical mass of copper (I) sulfide 
m(Cu₂S)=M(Cu₂S)n(Cu)/2

the percentage yield in the reaction is
w=m'(Cu₂S)/m(Cu₂S)=2m'(Cu₂S)/M(Cu₂S)n(Cu)
w=2*14.72/(159.16*0.2)=0.925 (92.5%)

5 0
3 years ago
Na+H2O=NaOH+H2<br> Balancing
elena55 [62]

Answer:

Hey mate, here is your answer. Hope it helps you.

Explanation:

The balanced equation is 2Na+2H2O———-> 2NaOH +H2.

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3 years ago
A sample of gas at 1.0°C is expanded at constant pressure from 10 L to 15 L. The final temperature is:
aleksley [76]

Answer:

y

Explanation:

yea Mami you know like for real I feel you you know iam seeing but tomorrow I see the equation for the last works positive AAAAA

4 0
2 years ago
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