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3 years ago

What characteristics define a scientific idea vs a pseudoscientific idea

1 answer:

6 0

Scientific data-reproducible,reliable results are demanded and experiments must be precisely described while pseudoscience failures are ignored,hidden,no actual physical phenomena or processes ever found

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Polymerization is generally also considered a(n) _______ reaction.

bazaltina [42]

Ur ans is option d
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3 years ago

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What total volume of ozone measured at a pressure of 24.5 mmHg and a temperature of 232 K can be destroyed when all of the chlor

ddd [48]

Answer:

$1.75272\ \text{m}^3$

Explanation:

The breakdown reaction of ozone is as follows

$CF_3Cl + UV \rightarrow CF_3 + Cl$

$Cl + O_3 \rightarrow ClO + O_2$

$O_3 + UV \rightarrow O_2 + O$

$ClO + O \rightarrow Cl + O_2$

It can be seen that 2 moles of ozone is required in the complete cycle

So for 10 cycles, 20 moles of ozone is required

m = Mass of $CF_3Cl$ = 15.5 g

M = Molar mass of $CF_3Cl$ = 104.46 g/mol

P = Pressure = 24.5 mmHg

T = Temperature = 232 K

R = Gas constant = $62.363\ \text{L mmHg/K mol}$

Number of moles is given by

$n=\dfrac{m}{M}\\\Rightarrow n=\dfrac{15.5}{104.46}\\\Rightarrow n=0.1484\ \text{moles}$

$20\ \text{moles} = 20\times 0.1484 = 2.968\ \text{moles}$

From ideal gas law we have

$PV=nRT\\\Rightarrow V=\dfrac{nRT}{P}\\\Rightarrow V=\dfrac{2.968\times 62.363\times 232}{24.5}\\\Rightarrow V=1752.72\ \text{L}=1.75272\ \text{m}^3$

For 20 cycles of the reaction the volume of the ozone is $1.75272\ \text{m}^3$ .

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3 years ago

. Which piece of safety equipment is least likely to be at Jerome's lab station? A. Goggles B. A fire extinguisherC. Heat-proof

charle [14.2K]

D a lab coat
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Which of the following is a major difference between elliptical galaxies and spiral galaxies?

SashulF [63]

Its A because I did it on connexus

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4 years ago

Which statement is a correct expression of the Law of Conservation of Mass?

Phantasy [73]

Law of Conservation of Mass - "The total mass after a chemical reaction is exactly the same as the mass before"

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3 years ago