The answer is D. (2,2,2,1)
The carbon atom is capable of forming four covalent bonds in combination with other elements as hydrogen, oxygen, nitrogen, sulfur, phosphorous and halogens. The compounds formed are called organic molecules which because of the nature of the chemical bond are stable compounds.
Adding an amino group -NH₂ and a carboxylic group -COOH to a carbon chain containing carbon and hydrogen we form amino acids. Condensation of amino acids will form peptides and further proteins, which are chemical molecules from which living things are made.
Carbon is the backbone of the molecules from which life is made.
Answer:
.A catalyst provides an alternate mechanism for the reaction
Explanation:
The catalyst provides a mechanism of reaction having the lowest activation energy. It lowers the energy barrier between reactants and products hence it increases the rate of reaction by several orders of magnitude
Answer:
energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure.
Explanation:energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure.
