Answer:
The mean value theorem tells us the average velocity must be between the minimum velocity and the maximum velocity. The only way it can be either the minimum or the maximum is if velocity is constant. So of course instantaneous velocity can be greater and can be less.
Explanation:
Answer: mole fraction of methanol = 0.590
mole fraction of ethanol = 0.410
Explanation:
We are given:
Equal masses of methanol
and ethanol
are mixed.
let the mass be x g.
Calculating the moles of methanol in the solution, by using the equation:

Calculating the moles of ethanol in the solution, by using the equation:

To calculate the mole fraction of methanol, we use the equation:


To calculate the mole fraction of ethanol, we use the equation:


Thus mole fraction of methanol is 0.590 and mole fraction of ethanol 0.410 in three significant figures.
Answer:
when lithium forms an ion it donates 1 electron
which makes its electron configuration to become 2