Answer:
The correct answer is - false.
Explanation:
At the energy-generating station, when the coal is burned, the chemical energy store in the coal converted into thermal energy and light or luminous energy.
The thermic energy generated used to heat and boil the water or liquid to generate the gas and generate the kinetic energy to move the fan that is desgined to generate the electrical energy.
Thus, the statment is false statement as it does not convert into sound energy.
Answer: They both describe atoms as being made up of positive and negative matter.
Answer : The percent by volume of oxygen gas in the mixture is, 5.3 %
Explanation :
According to the Raoult's law,
where,
= total partial pressure of solution = 3.8 atm
= partial pressure of oxygen = 0.20 atm
= mole fraction of oxygen = ?
Now put all the given values in this formula, we get:
Now we have to calculate the percent by volume of oxygen gas in the mixture.
The mole percent of oxygen gas = 
As we know that, there is a direct relation between the volume of moles.
So, mole percent of oxygen gas = volume percent of oxygen gas
Volume percent of oxygen gas =
Therefore, the percent by volume of oxygen gas in the mixture is, 5.3 %
Let's start to understand this question by a simple combustion reaction involving oxidation of Ethane in the presence of Oxygen. When Ethane is burned in the presence of Oxygen it produces Carbon Dioxide and Water respectively. Therefore, the equation is as,
C₂H₆ + O₂ → CO₂ + H₂O
Above reaction shows the reaction and the equation is unbalanced. Balancing chemical equation is important because according to law of conservation of mass, mass can neither be created nor destroyed. Hence, we should balance the number of elements on both side.
LHS RHS
Carbon Atoms 2 1
Hydrogen Atoms 6 2
Oxygen Atoms 2 3
It means this equation is not obeying the law. Now, how to balance? One way is as follow,
C₂H₆ + O₃ → C₂O₂ + H₆O
LHS RHS
Carbon Atoms 2 2
Hydrogen Atoms 6 6
Oxygen Atoms 3 3
We have balanced the equation by changing the subscripts. But, we have messed up the chemical composition of compounds and molecules like Oxygen is converted into Ozone.
Therefore, we will change the coefficients (moles) to balance the equation as,
C₂H₆ + 7/2 O₂ → 2 CO₂ + 3 H₂O
LHS RHS
Carbon Atoms 2 2
Hydrogen Atoms 6 6
Oxygen Atoms 7 7
Now, by changing the coefficients we have balanced the equation without disturbing the chemical composition of compounds and molecules.
Explanation:
<h2><em><u>SOLUTION</u></em><em><u>:</u></em></h2>
<em>Solution is a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility. </em>
<h2><em><u>COLLOID</u></em><em><u>:</u></em></h2>
<em>A mixture in which one substance is divided into minute particles (called colloidal particles) and dispersed throughout a second substance</em>
<h2><em><u>SUSPEN</u></em><em><u>SION</u></em><em><u>:</u></em></h2>
<em>A suspension is a heterogeneous mixture of a finely distributed solid in a liquid. The solid is not dissolved in the liquid, as is the case with a mixture of salt and water. </em>
