Question

A molecule of alkene has the chemical formula C3H4. How many carbon-carbon double bonds are present in the molecule?

Answer 1

Sketch first three carbon atoms like this C - C - C.

Every Carbon forms four bonds. Deduce, how many
Double bonds exist in the molecule, when 4 Hydrogen is available.

Answer 2

my answer choices are 1 2 or 3 so which would it be ? please

Answer 3

Hint: Carbon in middle don't have bonds with Hydrogen.

Answer 4

i don't know what that means

Answer 5

Structure of the molecule is C = C = C, without
H atoms, you can add 4 H-atoms.

Answer 6

what is H mean?
and c=c=c?

Answer 7

so would that make the answer 1 because you only have 1 double bond?

Answer 8

and thank you for helping me

Answer 9

All Carbons have double bond. Then you can add four Hydrogen atoms in the molecule. There are two double bonds.

Answer 10

so the answer is 2?

Answer 11

Yes, I'm glad to help you!

Answer 12

thank you

Answer 13

Which is an example of dehydration synthesis?

Answer 14

Two molecules are joined together and a water molecule is
Formed. e.g. Formation of dope pride from two amino acids.

Answer 15

the answers are
DNA synthesis from nucleotides
conversion of protiens into its amino acids
conversion of lipids into fatty acids

Answer 16

Proteins are hydrated (water is added) when converted to
Amino acids. Lipids also transfer fatty acids with treating
NaOH. I think first one is right.

Answer 17

yes thank you im gunnu be asking a lot of questions so keep an eye out on the list ill give u medals

Answer 18

U can count on me.