Answer:
7.00 g
Explanation:
There is some information missing. I think this is the complete question:
<em>Wine goes bad soon after opening because the ethanol CH₃CH₂OH in it reacts with oxygen gas O₂ from the air to form water H₂O and acetic acid CH₃COOH, the main ingredient of vinegar. What mass of ethanol is consumed by the reaction of 4.86g of oxygen gas? Round your answer to 3 significant digits.</em>
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First, we have to write the balanced equation.
CH₃CH₂OH + O₂ ⇒ CH₃COOH + H₂O
Then, we can establish the following relations:
- The molar mass of O₂ is 32.0 g/mol
- The molar ratio of O₂ to CH₃CH₂OH is 1:1
- The molar mass of ethanol is 46.1 g/mol.
The mass of ethanol that reacts with 4.86 g of oxygen is:
Answer: The bond between boron and hydrogen in boron trihydride is covalent bond.
Explanation:
The type of bonding between the atoms forming a compound is determined by using the electronegativity difference between the atoms. According to the pauling's electronegativity rule:
- If
, then the bond is non-polar. - If
, then the bond will be covalent. - If
, then the bond will be ionic.
We are given:
Electronegativity for boron = 2.0
Electronegativity for hydrogen = 2.1
As, 
is less than 1.7 and not equal to 0. Hence, the bond between boron and hydrogen is covalent bond.
It is based on the law of conservation of energy , which says that energy is neither created nor destroyed during a chemical reaction . I’m calorimeter , this means that the heat gained by the water in calorimeter must have been released by the sample or reaction taking place in the calorimeter .
Answer:
The vegetable oils are liquid at room temperature. They contain double bonds. During hydrogenation double bonds break hydrogen is introduced and form vegetable ghee.
Explanation:
Hydrogenation:
It is the chemical process in which hydrogen is introduced in unsaturated hydrocarbons in the presence of catalyst Ni.
Simple hydrogenation reaction:
H₂C = CH₂ + H₂ → CH₃-CH₃
Ni
Hydrogenation is used on industrial level in the production of vegetable ghee.
The unsaturated hydrocarbons, fatty acids undergoes hydrogenation and form ghee.
The vegetable oils are liquid at room temperature. They contain double bonds. During hydrogenation double bonds break hydrogen is introduced and form vegetable ghee.
