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2 years ago

What are the reactants and products in a chemical reaction?

2 answers:

7 0

Answer : The species present on the left side of the right arrow in the reaction are known as reactant and the species present on the right side of the right arrow in the reaction are known as product.

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of an individual elements present on reactant side must be equal to the product side.

The reactant and product species present in the reaction are separated by right arrow.

The species present on the left side of the right arrow in the reaction are known as reactant and the species present on the right side of the right arrow in the reaction are known as product.

For example :

$2H_2(g)+O_2(g)\rightarrow 2H_2O(l)$

This reaction is a balanced chemical reaction because in this reaction the number of atoms of an individual elements are equal on both side of the reaction.

In this reaction, $H_2$ and $O_2$ are the reactants and $H_2O$ is the product.

Dmitrij [34]2 years ago

5 0

The reactant is the chemical reaction of 2 or more different elements.
The product is what is formed in a chemical reaction.

Example: H + O ----> H2O
H + O is the reactants, and H2O is the products.

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This dipeptide is designated as: there is a structure for h3nchcnhchco with ch2oh group attached to the first (from left to righ

oksian1 [2.3K]

A dipeptide is formed when 2 amino acids are joined together by a peptide linkage.

Each amino acid molecule contains an amino group ( -NH₂) and a carboxyl ( -COOH) group. During peptide formation, a carboxyl group of one amino acid reacts with amino group of the other , resulting in the formation of a linkage known as "peptide linkage". A water molecule is also eliminated in this reaction.

A general peptide formation reaction can be written as

$NH_{2}-CH_{2}-COOH + H_{2}N-CH_{2}-COOH \rightarrow NH_{2}-CH_{2}-CONH-CH_{2}-COOH +H_{2}O$

In the above reaction, we can see a peptide linkage ( -CONH-) getting formed between 2 amino acid molecules.

In the given molecule the peptide linkage is shown by drawing a box around it. Please refer to the attached image.

If we want to know the amino acid molecules from which this peptide is formed, we will simply break the CO-NH bond.

We will add -OH group to CO part and -H to NH part to get 2 amino acid molecules as shown in the picture.

The two amino acids thus formed are Serine & Cysteine.

Serine is designated as "Ser" and Cysteine is designated as "Cys"

Therefore the given dipeptide is designated as "Ser-Cys"

4 0

2 years ago

Which of the following bases are strong enough to deprotonate CH3CH2CH2C≡CH (pKa = 25), so that equilibrium favors the products?

seraphim [82]

Answer:

a, and f.

Explanation:

To be deprotonated, the conjugate acid of the base must be weaker than the acid that will react, because the reactions favor the formation of the weakest acid. The pKa value measures the strength of the acid. As higher is the pKa value, as weak is the acid. So, let's identify the conjugate acid and their pKas:

a. NaNH2 will dissociate, and NH2 will gain the proton and forms NH3 as conjugate acid. pKa = 38.0, so it happens.

b. NaOH will dissociate, and OH will gain the proton and forms H2O as conjugate acid. pKa = 14.0, so it doesn't happen.

c. NaC≡N will dissociate, and CN will gain a proton and forms HCN as conjugate acid. pKa = 9.40, so it doesn't happen.

d. NaCH2(CO)N(CH3)2 will dissociate and forms CH3(CO)N(CH3)2 as conjugate acid. pKa = -0.19, so it doesn't happen.

e. H2O must gain one proton and forms H3O+. pKa = -1.7, so it doesn't happen.

f. CH3CH2Li will dissociate, and the acid will be CH3CH3. pKa = 50, so it happens.

6 0

2 years ago

Hydrogen bonds form between molecules containing _________ bonds; the hydrogen bond is between a hydrogen atom of one molecule a

nasty-shy [4]

Answer:

The answer is A. Polar covalent; negatively

Explanation:

Hydrogen bonds form between molecules containing polar covalent bond the hydrogen bond is been a hydrogen atom of one molecule and a partially negative charged atom of another.

Example $H_{2}O$ (water):- It contain a slight positive charge on one side and a slight negative charge on the other.