Wskaż substancję, która ma największą zawartość procentową węgla w cząsteczce:

1) C2H5OH

2) C2H6

3) C2H4 (OH) 2

4) C2H4

Answer: C2H4

Explanation:

The percentage composition of ethanol (C2H5OH) consist of 52.2% Carbon, Hydrogen of 13.0 and 34.8% of Oxygen.

The percentage composition of ethane gas (C2H6) consist of 80.0% carbon and 20.0% hydrogen.

The composition of Ethylene Glycols i. e C2H4 (OH) 2 is Carbon of 39.7%, 9.7% hydrogen and 51.6% oxygen.

The percent composition of c2h4 is 86% carbon, and 14% hydrogen.

From the information given, the substance with the highest percentage of carbon is C2H4