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>
<em />
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 : To calculate the standard molar enthalpy of complete combustion of liquid ethanol can be done by using the formula given below;
Now, the enthalpies of the elements in their standard state is zero always.
So the
Here we can avoid the heat of enthalpy of oxygen,carbon dioxide and water as they exists in their standard states.
So the
=
1.54 x 10^-10 (ten to the negative tenth power)
The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element.
Answer:
Surfactant. Surfactant, also called surface-active agent, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties
Explanation:
