Chemistry, 22.10.2020 22:01 sarahbennett11p4yxlb
The valence electrons in atoms are shielded from the attractive pull of the
nucleus by inner shells of electrons. This is called the shielding effect.
Do you think the reactivity of the halogens relates to the shielding effect?
Explain your reasoning
Answers: 3
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What problem would a person have if the nucleic acid in one of his or her cells were damaged?
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Which factor is likely to impact the possible number of compounds ?
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Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
The valence electrons in atoms are shielded from the attractive pull of the
nucleus by inner shells...
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