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goldenfox [79]
4 years ago
8

Why is there little heat retained in the warm thermosphere? a. The pressure is too low c. The molecules move too fast b. The pre

ssure is too high d. There are too many molecules to transfer heat
Chemistry
2 answers:
NNADVOKAT [17]4 years ago
7 0

There little heat retained in the warm thermosphere because:

The pressure is too low  

Explanation:

The thermosphere is the layer of Earth's atmosphere that however includes substantial molecules of complex gases. It transpires below the outermost layer, the exosphere. The thermosphere is the layer of Earth's atmosphere that still includes abundant molecules of complex gases. It occurs below the external layer, the exosphere. Heat and PressureThe remarkably low pressure of the thermosphere also adds to its high temperature.

iren [92.7K]4 years ago
3 0
I believe the correct answer is A
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Name different types of nutrients that our muscles need.
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Answer:

Biotin. ...

Iron. ...

Vitamin C. ...

Selenium. ...

Omega 3. ...

Vitamin D. ...

Vitamin B12.

Explanation:

4 0
3 years ago
Read 2 more answers
Question 23 (5 points)
iren [92.7K]

Answer:

λ = 6.25 × 10⁻¹⁰ m

x-ray

General Formulas and Concepts:

Speed of Light = Wavelength times Frequency

  • c = λν

Explanation:

<u>Step 1: Define</u>

C = 3.0 × 10⁸ m/s

ν  = 4.80 × 10¹⁷ Hz (s⁻¹)

λ = unknown

<u>Step 2: Solve for wavelength</u>

3.0 × 10⁸ m/s = λ(4.80 × 10¹⁷ Hz)

λ = 6.25 × 10⁻¹⁰ m

<u>Step 3: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules.</em>

6.25 has 3 sig figs. No changes necessary.

<u>Step 4: Identify</u>

6.25 × 10⁻¹⁰ m is in the x-ray spectrum according the the Electromagnetic Spectrum

5 0
3 years ago
Which element decreases its oxidation number in this reaction? bicl2 + na2so4 → 2nacl + biso4?
kifflom [539]
The balanced reaction is as follows;
BiCl₂ + Na₂SO₄ --> 2NaCl + BiSO₄
this is a double displacement reaction 
the oxidation number of Bi is +2 in both BiCl₂ and BiSO₄
oxidation number of Cl is -1 in both BiCl₂ and NaCl 
oxidation number of Na is +1 in both Na₂SO₄ and NaCl
oxidation numbers of elements in SO₄²⁻ remains the same in both compounds.Therefore the oxidation state in any of the elements in the reaction doesn't change. Neither of the elements show an increase or decrease in the oxidation numbers .
Answer for this question is no element decreases its oxidation number.

5 0
3 years ago
Read 2 more answers
Explain how the following experiment shows the direction that gravity pulls an object, specifically showing that it does not pul
balu736 [363]

Answer:that cant happen it get smaller ever bounce it docent get higher the first bounce it the highest.

Explanation:

7 0
3 years ago
The next 11 questions are related to the titration of 40.00 mL of a 0.0900 M acetic acid solution with 0.0700 M KOH. Assume that
liberstina [14]

Answer:

2.9 is the initial pH of the analyte solution.

Explanation:

The dissociation constant of acetic acid as per theoretical value =  K_a

K_a=10^{-4.756}=1.8\times 10^{-5}

The initial concentration of acetic acid = c = 0.0900 M

HAc\rightleftharpoons Ac^-+H^+

initially

c       0    0

At equilibrium

(c-x)      x  x

The expression of dissociation constant :

K_a=\frac{[Ac^-][H^+]}{[HAc]}

1.8\times 10^{-5}=\frac{x\times x}{(c-x)}

1.8\times 10^{-5}=\frac{x\times x}{(0.0900-x)}

Solving for x:

x = 0.001264 M

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The pH of the solution :

pH=-\log[0.001264]=2.898\approx 2.9

2.9 is the initial pH of the analyte solution.

4 0
3 years ago
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