Answer:
Option B
Covalent Bonding
Explanation:
Covalent bonds in C2H5OH are formed between the carbon and hydrogen atoms, where there are shared electron pairs.
This is a weak form of attraction that holds the C2H5OH molecule together, and can easily be broken by a polar solvent such as water.
In order for water to be able to dissolve the C2H5OH molecule, it must break the covalent bonding present in the molecule
Answer:
Achol
Explanation:
Reduction of other aldehydes gives primary alcohols. Reduction of ketones gives secondary alcohols. The acidic work-up converts an intermediate metal alkoxide salt into the desired alcohol via a simple acid base reaction.
Answer:
Second Earth's Atmosphere
The second atmosphere, which was the first to remain with the earth, was created by volcanic outgassing and comet ice. There was a lot of water vapor, carbon dioxide, phosphorus, and methane in this atmosphere, but absolutely no oxygen.
Explanation:
The chemical formula for quartz is SiO₂. It has a molar mass of 60.08 g/mol. We use this to find the moles of quartz.
Moles of quartz = 1.90 g(1 mol/60.08 g) = 0.03162 moles
From the chemical formula, there are 2 moles of Oxygen per 1 mole of SiO₂.
Moles of oxygen = 0.03162 moles*2 = 0.063249 moles O
We use the Avogadro's number, 6.022×10²³ atoms/mole, to find the number of oxygen atoms.
0.063249 moles O * 6.022×10²³ atoms/mole = <em>3.81×10²² atoms of oxygen</em>
