Answer:
Biuret test does not work for all kinds of proteins. It only works with proteins and peptides that have 2 or more peptide bonds.
Explanation:
The Biuret test is used to determine proteins and polypeptides that contain 2 or more peptide bonds.
It is made of potassium hydroxide and cupric sulfate, along with sodium and potassium tartrate.
It consists of treating a protein with Cu ++ in alkaline medium, producing a violet coloration by forming a coordination complex between the Cu ++ and the free electron pairs of the nitrogens of the amino groups of the peptide junction. At least two peptide bonds are necessary for the reaction to take place.
Therefore, this test does not serve to determine the amount of amino acids and peptides with a single peptide bond such as: tyrosine (amino acid), tryptophan (amino acid), alanine (amino acid), aspartame (peptide)
Answer:
It is an Alkaline Earth Metal
Explanation:
Metallic bonding results from the delocalization of electrons from the parent metal atom so that positive ions are conceived to swim in a sea of electrons. This view of metallic bonding accounts for the malleability, and ductility of metals, as well as their properties of thermal and electrical conduction.
5CO2 should be in the blank spot.
the reaction would be 7
Answer:
Molar mass of KClO₃ = (39 + 35.5 + 16×3) g/mol = 122.5 g/mol
Molar mass of KCl = (39 + 35.5) g/mol = 74.5 g/mol
Balanced equation for the reaction:
2KClO₃ → 2KCl + 3O₂
Mole ratio KClO₃ : KCl = 2 : 2
Moles of KClO₃ reacted = (2.73 g) / (122.5 g/mol) = 0.0223 mol
Moles of KCl formed = (0.0223 mol) × (2/2) = 0.02229 mol
Mass of KCl formed = (0.0223 mol) × (74.5 g) = 1.66 g
====
OR:
(2.73 g KClO₃) × (1 mol KClO₃ / 122.5 g KClO₃) × (2 mol KCl produced / 2 mol KClO₃) × (74.5 g KCl / 1 mol KCl)
= 1.66 g KCl produced
Living things are composed of cells, Living things have different levels of organization, Living things use energy, Living things respond to their environment, Living things grow, Living things reproduce, Living things adapt to their environment. Hope that helped!