Explanation:
From ideal gas equation we have
P1V1= n1RT1
at state 1
And
P2V2= n2RT2
at state 2
given the volume and pressure as constant
therefore we can write
n1/n2 = T2/T1
n2/n1 = T1/T2 = 1/4
Therefore the fraction of moles of gas escaped = 1-1/4 = 3/4
<h2><u>Full Question:</u></h2>
The diagram shows molecules in a fluid. Explain the sequence of events that happens when this fluid cools down. Be sure to focus on what happens to the molecules and to the fluid in general. Five events should be included in your answer. The kinetic energy of the molecules decreases
The molecules slow down
The molecules move closer together
The density of the fluid increases
The fluid sinks
<h2><u>Answer: </u></h2>
When the fluid cools, the kinetic energy of the molecules decreases. This causes the energy of the molecules decreases. This causes the molecules to slow down and move closer together. Sines the molecules are closer together, the density of the fluid increases and the fluid sinks.
<h3><u>Explanation</u></h3>
This is a simple question based on the state of matter. Here the kinetic theory of matter is taken into account. The kinetic theory of matter says that the state of matter is highly affected by the kinetic energy of the molecules. And the kinetic energy is dependent on the temperature. Cooler temperature has lower kinetic energy and vice versa. So, as the fluids cool, the kinetic energy of the molecules decreases, which let's them come closer because of less number of collisions. Thus, the number of molecules per unit volume increase, which is the density of the substance. As the density increase, the fluid starts sinking owing to heavier weight. :
This is a simple question based on the state of matter. Here the kinetic theory of matter is taken into account. The kinetic theory of matter says that the state of matter is highly affected by the kinetic energy of the molecules. And the kinetic energy is dependent on the temperature. Cooler temperature has lower kinetic energy and vice versa. So, as the fluids cool, the kinetic energy of the molecules decreases, which let's them come closer because of less number of collisions. Thus, the number of molecules per unit volume increase, which is the density of the substance. As the density increase, the fluid starts sinking owing to heavier weight.
Answer:
A
Explanation:
The correct answer would be that <u>the wire is a conductor and the cover is an insulator.</u>
The wire inside an electrical cord is made up of metals and metals are generally considered to be good conductors of heat and electricity. The cover which is made of plastic or rubber, however, are known to be poor conductor of electricity. <em>Hence, the wire are considered to be conductors of electricity while the rubber covers act as insulators to protect users from getting electrocuted. </em>
The correct option is A.
the answer to your question is A
<span>The number of protons in every atom of an element determines the atomic number of an atom. Short after Rutherford made the gold foil experiment, the British scientist Henry Mosely discovered that the atoms of every element have a unique positive charge in their nuclei. This positive charge is the number of protons and is called atomic number. So, the atomic number identifies every different element.</span>
