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Sphinxa [80]
3 years ago
6

Conclusion of electrolysis for grade 8th

Chemistry
1 answer:
vlabodo [156]3 years ago
6 0

The conclusion from these figures is that hydrogen should be produced at the cathode and oxygen at the anode from the electrolysis of water—which is at variance with the experimental observation that zinc metal is deposited and bromine is produce

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Asking high school students if the school day should be lengthened to improve
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Answer:

it can be tooo. long or coplicated because nomatter how long u stay in school they give u homework and also a lot of people have jobs when would they be ableto work

Explanation:

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3 years ago
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Identify the name of the compound Cr2(CO3)3.
kompoz [17]
Cr2(CO3)3 is Chromium (III) Carbonate or Chromic Carbonate. 

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This compound is composed of 36.6% Chromium, 12.7% Carbon, and 50.7% Oxygen.
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How many moles are there in 87.2 g of zinc fluoride?
Sladkaya [172]

Answer:

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7 0
2 years ago
Why is burning wood a chemical change?
Nitella [24]
There are 4 things that are evidence of a chemical change.
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3 0
3 years ago
For many years chloroform (CHCl3) was used as an inhalation anesthetic in spite of the fact that it is also a toxic substance th
Debora [2.8K]

Hey there!:

Molar mass:

CHCl3 = ( 12.01 * 1 )+ (1.008 * 1 ) + ( 35.45 * 3 ) => 119.37 g/mol

C% =  ( atomic mass C / molar mass CHCl3 ) * 100

For C :

C % =  (12.01 / 119.37 ) * 100

C% = ( 0.1006 * 100 )

C% =  10.06 %

For H :

H% = ( atomic mass H / molar mass CHCl3 ) * 100

H% = ( 1.008 / 119.37 ) * 100

H% = 0.008444 * 100

H% = 0.8444 %

For Cl :

Cl % ( molar mass Cl3 / molar mass CHCl3 ):

Cl% =  ( 3 * 35.45 / 119.37 ) * 100

Cl% =  ( 106.35 / 119.37 ) * 100

Cl% = 0.8909 * 100

Cl% = 89.9%


Hope that helps!

4 0
3 years ago
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