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sergij07 [2.7K]
3 years ago
13

Which of the following compounds is the name of a 5 carbon Allene?

Chemistry
1 answer:
LiRa [457]3 years ago
5 0
"Pent" is five, "ene" means double bonded carbon
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stich3 [128]
Just dived both numbers by two
4 0
3 years ago
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purification of chromium can be achieved by electrorefining chromium from an impure chromium anode onto a pure chromium cathode
stiv31 [10]

The chromium in the electrolytic solution is present as cr³⁺ will take 6.19 hours  will it take to plate 18.0 kg of chromium onto the cathode if the current passed through the cell is held constant at 45.0 A.

It is given that mass is 18 kg. Converting mass into grams

18 x (1000g / 1 kg)

= 18000 g

So, 18 kg = 18000 g

Now, calculate the number of moles

No. of moles = mass of Cr / molecular mass of Cr

No. of moles = 18000 / 52 g/mole

No. of moles = 346.15 mole

For , Cr³⁺, 3 moles of electrons are required

Hence,

3 x 346.15 mole

1038.45

As 96500 C of charge are present in 1 mole of electrons. As a result, the charge held by 1038.45 mole of electrons will be determined as follows.

= 1038.45mol x  96500 C / mole

= 10.02 x 10⁷ C

As, we know that relation between charge, current and time is as follows.

Q = I x T

Current is given as 45 A

Therefore, charge is calculated  

T = Q / I

T = 100.21 x 10⁶ / 45

T = 2.227 x 10⁶

As there are 3600 seconds in one 1 hour. Converting 2.227 x 10⁶ into hours are

= 2.227 x 10⁶ / 3600 sec/h

= 6.19 hours

Thus, if the current flowing through the cell is maintained constant at 45 A, we may estimate that it will take 6.19 hours to plate 18 kg of chromium onto the cathode.

To know more about  electrolytic solution visit :

brainly.com/question/9203208

#SPJ4

4 0
1 year ago
how many electrons does silver have to give up in order to achieve a sido noble gas electron configuration
andrezito [222]

Answer:

Silver has to give up one electron.

Explanation:

Silver is a transition element and has a partially filled 4d- orbital having 9 electrons and a 5s orbital having 2 electrons in it. In order to achieve stability, silver must have completely filled d-orbital having a maximum number of 10 electrons in it.

Therefore, one electron from 5s orbital jumps to 4d orbital to make it stable. Now, 5s orbital has only one electron, and it will be easy for silver to lose this electron to attain a stable electronic configuration.

4 0
3 years ago
A gold cube is 170.00 mm long, 20.00 cm wide, and 0.99 m thick. If gold has a
GaryK [48]

Answer:

Explanation:

There's 2 steps: first find the volume then the mass

volume=lwh

convert 20 cm to mm: 20x10=200mm

volume=(170)(200)(0.99)

volume=33,660 mm

since the density is in cm cubed, convert 33,660 mm to cm

33,660/10=3366

density=mass/volume, rearrange to get mass=density x volume

mass=19.3 x 3366

mass=64963.8

6 0
3 years ago
At a fixed volume, a four-fold increase in the temperature of a gas will lead to _______ in pressure.
timofeeve [1]

Answer:

D) a four-fold increase

Explanation:

According to Gay-Lussac's law, which states that the pressure of a given amount of gas is directly proportional to the temperature at a constant volume, the pressure increases with an increase in temperature.

According to this question, at a fixed volume, a four-fold increase in the temperature of a gas will lead to a four-fold increase in the pressure as well.

5 0
3 years ago
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