Back to School Week - Thursday: Chemistry! - Page 5 - Jesters&Heralds

Back to School Week - Thursday: Chemistry!

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zAquisgran [11]

Professional

Posts: 866

Location: Möhnesee

Friday, September 11th 2020, 3:33pm

Quoted from "Atrocitus"

How many % alcohol should a liquid contain in order to have a disinfectant feature?

Hmm, seems like depends on which you wann kill with it, as on german pages it sais 62%,
on english it sais "The Centers For Disease Control (CDC) recommend alcohol at a concentration of 50%-70%"

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Atrocitus [5]

Intermediate

Posts: 577

Friday, September 11th 2020, 3:38pm

Quoted from "zAquisgran"

Quoted from "Atrocitus"

How many % alcohol should a liquid contain in order to have a disinfectant feature?

Hmm, seems like depends on which you wann kill with it, as on german pages it sais 62%,
on english it sais "The Centers For Disease Control (CDC) recommend alcohol at a concentration of 50%-70%"

Yes i forgot asking for covid xd it was %70
So your answer is correct

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Baltazar_Blake [14]

Intermediate

Posts: 199

Friday, September 11th 2020, 3:46pm

what is the atomic number of phosphorus?

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zAquisgran [11]

Professional

Posts: 866

Location: Möhnesee

Friday, September 11th 2020, 3:49pm

Quoted from "Baltazar_Blake"

atomic number of phosphorus

Symbol "P"
Number 15

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Baltazar_Blake [14]

Intermediate

Posts: 199

Friday, September 11th 2020, 3:57pm

Quoted from "zAquisgran"

Quoted from "Baltazar_Blake"

atomic number of phosphorus

Symbol "P"
Number 15

Is correct.

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VerginaSun [9]

Trainee

Posts: 91

Friday, September 11th 2020, 4:05pm

A volume of 500 mL is equivalent to

a. 5 L
b. 50 L
c. 0.5 dL
d. 0.5 L
e. 500 dL

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Atrocitus [5]

Intermediate

Posts: 577

Friday, September 11th 2020, 4:09pm

d. 0.5 L

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VerginaSun [9]

Trainee

Posts: 91

Friday, September 11th 2020, 4:11pm

Quoted from "Atrocitus"

d. 0.5 L

Correct

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Anneymid [14]

Trainee

Posts: 81

Friday, September 11th 2020, 4:15pm

What is electron configuration for copper without using noble gases?

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Baltazar_Blake [14]

Intermediate

Posts: 199

Friday, September 11th 2020, 4:39pm

Quoted from "Anneymid"

What is electron configuration for copper without using noble gases?

1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^1

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Baltazar_Blake [14]

Intermediate

Posts: 199

Friday, September 11th 2020, 4:45pm

What is the electron configuration of phosphorus without using noble gases?

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Baltazar_Blake [14]

Intermediate

Posts: 199

Friday, September 11th 2020, 4:45pm

Quoted from "Baltazar_Blake"

Quoted from "Anneymid"

What is electron configuration for copper without using noble gases?

1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^1

Good question

i am remember :angel:

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Atrocitus [5]

Intermediate

Posts: 577

Friday, September 11th 2020, 4:46pm

Quoted from "Baltazar_Blake"

Quoted from "Anneymid"

Quoted from "Anneymid"

What is electron configuration for copper without using noble gases?

Invalid question..

Quoted from "Baltazar_Blake"

Quoted from "Anneymid"

What is electron configuration for copper without using noble gases?

1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^1

A magmar may answer a human question xd

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Baltazar_Blake [14]

Intermediate

Posts: 199

Friday, September 11th 2020, 4:47pm

Quoted from "Atrocitus"

Quoted from "Baltazar_Blake"

Quoted from "Anneymid"

Quoted from "Anneymid"

What is electron configuration for copper without using noble gases?

Invalid question..

Quoted from "Baltazar_Blake"

Quoted from "Anneymid"

What is electron configuration for copper without using noble gases?

1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^1

A magmar may answer a human question xd

i think is magmar...sorry sorry

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Atrocitus [5]

Intermediate

Posts: 577

Friday, September 11th 2020, 5:15pm

which compound using for turn glass into mirror

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zAquisgran [11]

Professional

Posts: 866

Location: Möhnesee

Friday, September 11th 2020, 5:15pm

Quoted from "Baltazar_Blake"

What is the electron configuration of phosphorus without using noble gases?

[Ne] 3s2 3p3

take NE out

=3s2 3p3

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Atrocitus [5]

Intermediate

Posts: 577

Friday, September 11th 2020, 5:18pm

Quoted from "zAquisgran"

Quoted from "Baltazar_Blake"

What is the electron configuration of phosphorus without using noble gases?

[Ne] 3s2 3p3

take NE out

=3s2 3p3

Ne has own electron configuration and he asking for Ne conf + 3s2 3p3 xd

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Atrocitus [5]

Intermediate

Posts: 577

Friday, September 11th 2020, 5:18pm

Quoted from "zAquisgran"

How many elements start with "V" like VerginaSun?

Didnt see my question :grr:

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Baltazar_Blake [14]

Intermediate

Posts: 199

Friday, September 11th 2020, 5:24pm

Quoted from "zAquisgran"

Quoted from "Baltazar_Blake"

What is the electron configuration of phosphorus without using noble gases?

[Ne] 3s2 3p3

take NE out

=3s2 3p3