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klio [65]
2 years ago
10

A temperature of 55°F is approximately equivalent to 13°C.

Chemistry
2 answers:
GuDViN [60]2 years ago
7 0

Answer: Yes. That is right. The actual answer, not rounded, would be 12.7778 Degrees Celsius.

expeople1 [14]2 years ago
6 0
Yes that is correct
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How much<br>much hydrogen gas evolved<br>when 1.5 current is passed through water for 1.5 hours?​
evablogger [386]

0.042 moles of Hydrogen evolved

<h3>Further explanation</h3>

Given

I = 1.5 A

t = 1.5 hr = 5400 s

Required

Number of Hydrogen evolved

Solution

Electrolysis of water ⇒ decomposition reaction of water into Oxygen and Hydrogen gas.

Cathode(reduction-negative pole) : 2H₂O(l)+2e⁻ ⇒ H₂(g)+2OH⁻(aq)

Anode(oxidation-positive pole) : 2H₂O(l)⇒O₂(g)+4H⁻(aq)+4e⁻

Total reaction : 2H₂O(l)⇒2H₂(g)+O₂(g)

So at the cathode H₂ gas is produced

Faraday : 1 mole of electrons (e⁻) contains a charge of 96,500 C

\tt mol~e^-=\dfrac{Q}{96500}

Q = i.t

Q = 1.5 x 5400

Q = 8100 C

mol e⁻ = 8100 : 96500 = 0.084

From equation at cathode , mol ratio e⁻ : H₂ = 2 : 1, so mol H₂ = 0.042

4 0
3 years ago
Draw the mechanism of polymerization of propylene with benzoyl peroxide. Show chemical structures and arrows and remember that r
allochka39001 [22]

Answer:

See explanation below

Explanation:

This mechanism of polimerization is of one type. This mechanism goes through free radical polimerization, which means that we use a initiator as the radical source, then, the polimerization begins with the breaking of the covalent bonds of that initiator. In this case the benzoyl peroxide. And this mechanism is given in three steps.

In the picture you have the mechanism in the 3 steps:

7 0
3 years ago
What is the estimates range of conduct disorder in boys?
Rama09 [41]
Between 23 and 87%

Sorry if I’m wrong
6 0
2 years ago
It has been proposed that North America is moving west at about 2 cm per year. How many kilometers would it move in 5,000 years?
andriy [413]
Well it would move 10,000cm so converting that into km would be it would move 0.1km 
3 0
3 years ago
The total number of the elements above with 2 valence electron is ____.
OverLord2011 [107]

Answer:

four elements

Explanation:

He = 1s²

Be = 1s² 2s²

C = 1s² 2s² 2p²

Mg = 1s² 2s² 2p⁶ 3s²

Si = 1s² 2s² 2p⁶ 3s² 3p²

Ca = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

Valence electrons are those electrons which are present in outer most electronic shell.

He, Be, Mg, Ca these four elements have 2 valence electrons.

While Si and C have four valance electrons.

4 0
2 years ago
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