4 years ago

Based on Reference Table S, atoms of which of these elements have the strongest attraction for the electrons in a chemical bond?

1 answer:

lisabon 2012 [21]4 years ago

5 0

(4) Sulfur has the highest electronegativity, therefore has the highest attraction for the electrons in a chemical bond.

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What are conditions of cis trans isomerism, justify with example?

Bezzdna [24]

Answer:

Conditions for geometrical isomerism: There are two necessary conditions for a compound to possess geometrical isomerism:

(i) It must contain a carbon-carbon double bond in the molecule.

(ii) Two unlike atoms or groups must be linked to each doubly bonded carbon atoms

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The R group or side chain of the amino acid leucine is non-polar. The R group of serine is polar. Where would you expect to find

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While Leucine side chain is hydrophobic in nature is positioned on the interior of the globular protein.

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An 11.75 g sample of a common hydrate of cobalt(ii) chloride is heated. after heating, 9.25 g of anhydrous cobalt chloride remai

Irina-Kira [14]

Hydrated salts are when salt crystals have water molecules bound. Anhydrous salts are when the water has been removed.
mass of water removed = hydrated salt - anhydrate salt
= 11.75 g - 9.25 g = 2.50 g
number of water moles = 2.50 g / 18 g/mol = 0.139 mol
number of cobalt (II) chloride moles = 9.25 g / 130 g/mol = 0.0712 mol
ratio of water moles to CoCl₂ moles - 0.139 mol / 0.0712 mol = 1.95
rounded off 2 moles of water for every 1 mol of CoCl₂
formula - CoCl₂.2H₂O
name - Cobalt(II) chloride dihydrate

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