Zadanie 6c
Propanoic acid reacts with methanol to produce an ester. Draw the full structural formula of the organic product.
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Propanoic acid reacts with methanol to produce an ester. Draw the full structural formula of the organic product.
(i) Write the equation for the complete combustion of propan-1-ol, CH3CH2CH2OH. (ii) Determine the enthalpy change, in kJ mol−1, for the combustion of gaseous propan-1-ol to give gaseous carbon dioxide and gaseous water, using bond…
Hex-3-ene, CH3CH2CH=CHCH2CH3, reacts with chlorine, Cl2. (i) Identify the type of reaction that takes place. (ii) Predict the structural formula of the organic product of this reaction. (iii) Hex-3-ene can also undergo addition polymerization.…
A student separates the coloured dyes in a sample of black ink by paper chromatography, using water as the solvent. Explain how paper chromatography can separate and identify the dyes in a mixture.
In which row are the blocks of the periodic table correctly given for calcium, iron and chlorine? A. Calcium: p; iron: d; chlorine: s B. Calcium: s; iron: p; chlorine: d C. Calcium: s; iron: d; chlorine: p D. Calcium: d; iron: s; chlorine: p
Determine the identity of the amino acid in spot B by calculating its RF value from the chromatogram.
Spot X is known to be either glutamine or isoleucine. The structures of the two amino acids are shown. Predict, with reference to the structures, which amino acid is more likely to be in spot X. Use the RF values in the table.
Which is the electron configuration of an atom of an element in group 14, period 4? A. [Ar] 4s2 3d2 B. [Ar] 4s2 3d10 4p2 C. [Ne] 3s2 3p2 D. [Ar] 4s2 3d10 4p4
Which of the following statements can be deduced from the period in which an element is placed? I. The number of occupied main energy levels II. The number of protons in the nucleus III. The number of electrons in the outer energy level A. I only B. I and II…
Which properties decrease down group 17, the halogens? I. electronegativity II. first ionization energy III. melting point A. I and II only B. I and III only C. II and III only D. I, II and III