Complete the paragraph to describe the characteristics of silicon tetrachloride molecule (SiH4). the Lewis structure and the tab
le of electronegativities are given.
The bond polarities of SiH4 are _____, the molecular shape is _____, and the molecule is _____.
Blank Options 1: Polar, Nonpolar
Blank Options 2: trigonal pyramidal, trigonal planar, tetrahedral, linear, bent
Blank Options 3: Polar, Nonpolar
The bond polarities of SiH4 are _____, the molecular shape is _____, and the molecule is _____.
Blank Options 1: Polar, Nonpolar
Blank Options 2: trigonal pyramidal, trigonal planar, tetrahedral, linear, bent
Blank Options 3: Polar, Nonpolar
1 answer:
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The percent yield of carbon dioxide will be 49.0 %.
<h3>Percent yield</h3>First, let's look at the equation of the reaction:
The mole ratio of octane to oxygen is 2:25.
Mole of 3.43 g octane = 3.43/114.23 = 0.03 mol
Mole of 19.1 g oxygen = 19.1/32 = 0.60 mol
Thus, octane is limiting.
Mole ratio of octane to carbon dioxide = 2:16.
Equivalent mole of carbon dioxide = 0.03 x 8 = 0.24 mol
Mass of 0.24 mol carbon dioxide = 0.24 x 44.01 = 10.5624 grams
Percent yield of carbon dioxide = 5.18/10.5624 = 49.0 %
More on percent yield can be found here: brainly.com/question/17042787
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The boiling point of HF is higher than the boiling point of , and it is higher than the boiling point of
.
The boiling point is the temperature at which the pressure exerted by the surroundings upon a liquid is equalled by the pressure exerted by the vapour of the liquid.
has weak dispersion force attractions between its molecules, whereas liquid HF has strong ionic interactions between
and
ions.
Only London Forces are formed - Therefore more energy is required to break the intermolecular forces in HF than in the other hydrogen halides and so HF has a higher boiling point.
and
will only have intra-molecular attractions and there will be no hydrogen bonds present in them. As a result, their boiling point will be lower.
Hence, the boiling point of HF is higher than the boiling point of , and it is higher than the boiling point of
.
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