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densk [106]
3 years ago
10

What activates a convection current, starting the flow of a fluid ??

Chemistry
2 answers:
kari74 [83]3 years ago
8 0

The answer is D hope this helps

Grace [21]3 years ago
6 0
Hey there!

<span>What activates a convection current, starting the flow of a fluid ?

Answer: </span>

<span>D. Temperature differences in the mantle </span><span>
Hope this helps
Have a great day (:
</span>
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Which characteristic is given by the angular momentum quantum number
Marianna [84]

Answer: orbital shape.


Justification:


1) There are four quantum numbers to describe the electrons. These are:


i) Principal quantum number (n)

ii) Azimuthal quantum number (ℓ), also called angular momentum quantum number.

iii) Magnetic quantum number (m)

iv) Spin quantum number (s)


2) The principal quantum number tells the main energy level. It can be 1, 2, 3, 4, 5, 6, 7. It is related with the orbial size. 1 is a small orbital, 7 is a big orbital.


2) The Azimuthal quantum number (ℓ) or angular momentum quantum number may be a number between 0 and n - 1.


It tells the kind of orbital, which is its shape


The correspondence is:


0 = s orbital,


1 = p orbital,


2 = d orbital,


3 = f orbital.


3) Magnetic quantum number (m) tells the orientation. It can be from - ℓ to + ℓ


For example when ℓ = 1, the orbital is p, and the magnetic quantum number may be -1, 0, or +1, which correspond to px, py, pz: the orientation of the p orbital in the space.


4) Spin quantum number (s) can be either +1/2 or -1/2.

7 0
3 years ago
Read 2 more answers
Which statement best describes two events that occur at a convergent boundary where one plate moves under another
cestrela7 [59]
<span>A) Frequent earthquakes may occur volcanic activity may be common.</span>
6 0
3 years ago
Read 2 more answers
The stock concentration of NaOH is 0.5M. 0.5M = 0.500mol/1.0L.
valentinak56 [21]

Answer:a) 0.1 mole. b) 4g. c) 2% d)  196 mL

Explanation: in 200mL , 0.1mole

mw NaOH = 40g/mol —> 4g in 0.1 mole

4g in 200mL so 2g in 100mL

density NaOH = 1g/mL so if 4g in 200 mL,  4mL , 196 mL water

5 0
2 years ago
The boiling point of an aqueous 1.83 m (nh4)2so4 (molar mass = 132.15 g/mol) solution is 102.5°c. determine the value of the van
Goshia [24]

We need to know the value of van't hoff factor.

The van't hoff factor is: 2.66 or 2.7 (approximately)

(NH₄)₂SO₄ is an ionic compound, so it dissociates in solution and produces 3 ionic species. Therefore van't hoff factor is more than one.

From the equation: ΔT_{b}=i K_{b}.m, where ΔT_{b}= elevation of boiling point=102.5 - 100=2.5°C.

m=molality of solute=1.83 m (Given)

K_{b}= Ebullioscopic constant or Boiling point elevation constant= 0.512°C/m (Given)

i= Van't Hoff factor

So, 2.5= i X 0.512 X 1.83

i=\frac{2.5}{0.512 X 1.83}

i=2.66= 2.7 (approx.)


6 0
3 years ago
Calculate the heat absorbed/released (in Joules) by the solution when the cold pack solid dissolved in water in your experiment.
skad [1K]

Answer:

56765

Explanation:

i did the math and this is the answer

8 0
2 years ago
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