Answer:
In case of low-mass stars,the outer layers of the low mass stars are expelled as the core collapses such that the outer layers form a planetary nebula.
Explanation:
In case of low-mass stars,the outer layers of the low mass stars are expelled as the core collapses such that the outer layers form a planetary nebula. The core remains as a white dwarf and finally become a black dwarf as it cools down. A low mass star consumes its core hydrogen and turns it into helium over its lifetime.
Answer:
c. The N2 molecules collide more frequently with the walls of the flask than do the Ar atoms.
Explanation:
The statements are:
a. There are more molecules of N2 present than atoms of Ar. <em>FALSE</em>. Because 1 mol of molecules of N2 = 28g and 1 mol of molecules of Ar = 40g. As there are equal MASSES, you will have more molecules of N2 than Ar molecules
b. The pressure is greater in the Ar flask. <em>FALSE</em>
Because pressure is directly proportional to amount of molecules. As molecules N2 > Molecules Ar. The pressure is greater in N2 flask
c. The N2 molecules collide more frequently with the walls of the flask than do the Ar atoms. <em>TRUE</em>
The collision probability of N2 is higher because there are more molecules presents
Answer:
The entropy of the products of a reaction is always greater than the entropy of the starting materials
Explanation:
The second Law of Thermodynamics says that entropy always increases
A + B ----> AB
A and B that were completely arranged in their structures had to be completely messy to form compound AB
When an isolated system reaches a maximum entropy configuration, it can no longer undergo changes: it has reached equilibrium.
Answer: (D) environmental chemistry
Explanation:
