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STALIN [3.7K]
3 years ago
7

How does flame spread over liquid depend on the flash point?

Chemistry
1 answer:
zvonat [6]3 years ago
6 0
If the liquid is at or above its flash point, the flame spread rate is fast, and the entire pool is engulfed within seconds. ... As the liquid temperature decreases, flame radiation must both heat the liquid to the flash point temperature and supply the heat of vaporization.
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Three players (A, B and C) shoot three arrows at a target
UkoKoshka [18]

Answer:

Player B

Explanation:

I just did it and I got it right :)

6 0
3 years ago
(2 pts) The solubility of InF3 is 4.0 x 10-2 g/100 mL. a) What is the Ksp? Include the chemical equation and Ksp expression. MW
Aleonysh [2.5K]

Answer:

a) Ksp = 7.9x10⁻¹⁰

b) Solubility is 6.31x10⁻⁶M

Explanation:

a) InF₃ in water produce:

InF₃ ⇄ In⁺³ + 3F⁻

And Ksp is defined as:

Ksp = [In⁺³] [F⁻]³

4.0x10⁻²g / 100mL of InF₃ are:

4.0x10⁻²g / 100mL ₓ (1mol / 172g) ₓ (100mL / 0.1L) = <em>2.3x10⁻³M  InF₃. </em>Thus:

[In⁺³] = 2.3x10⁻³M  InF₃ × (1 mol In⁺³ / mol InF₃) = 2.3x10⁻³M  In⁺³

[F⁻] = 2.3x10⁻³M  InF₃ × (3 mol F⁻ / mol InF₃) = 7.0x10⁻³M F⁻

Replacing these values in Ksp formula:

Ksp = [2.3x10⁻³M  In⁺³] × [7.0x10⁻³M F⁻]³ = <em>7.9x10⁻¹⁰</em>

<em></em>

b) 0.05 moles of F⁻ produce solubility of InF₃ decrease to:

7.9x10⁻¹⁰ = [x] [0.05 + 3x]³

Where x are moles of In⁺³ produced from solid InF₃ and 3x are moles of F⁻ produced from the same source. That means x is solubility in mol / L

Solving from x:

x = -0.018 → False solution, there is no negative concentrations.

x = 6.31x10⁻⁶M → Right answer.

Thus, <em>solubility is 6.31x10⁻⁶M</em>

3 0
3 years ago
What is the reducing agent in the reaction below?
trapecia [35]
Al    is  the  reducing  agent.That    is  answer  B  is  the  above  answer
  Al  acts  as  a  strong  reducing  agent.  It  reduces  crO3  to  form cr  while  Al  is  oxidized  to  Al2O3.    Al is  capable  to  reduce  cr  since  Al  is  higher  in   reactivity  series  than  cr.
8 0
3 years ago
2 gallons is equal to how many liters
Arte-miy333 [17]

Answer:

7.57082

Explanation:

its just the answer

7 0
3 years ago
Describe how mixtures relate to substances
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All Matter can be Classified into two Categories pure substances and mixtures a pure substance consists of a single element or compound a mixture however is made up of differ
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