<span>Avogadro's number
represents the number of units in one mole of any substance. This has the value
of 6.022 x 10^23 units / mole. This number can be used to convert the number of
atoms or molecules into number of moles. We calculate as follows:
</span>2.0x10^22 molecules H2O ( 1 mol / 6.022 x 10^23 molecules ) = 0.0332 moles H2O
Hope this answers the question. Have a nice day.
Answer:the molecules begin to collide with each other.
Explanation:
When the temperature of the ground increases the movement of the molecules in the ground also increases due to their collision with each other.
We use conservation of energy. Note that at the beginning of the drop, the pig has only potential energy, and at the bottom, it has only kinetic energy. Then:
Now, we multiply by
to get:
Then, we have that:
Now, we substitute.
while
. Therefore,
.
because a chemical change takes time
Answer:
0 m/s^2
Explanation:
Use a formula to answer the question
d = r * t
The object is not changing speed at any time, or if it is we are not told. The rate is the speed.
8 = r * 1 second
8 m/sec = r
The initial speed is 8 and the final rate is 8. There is no change. So when you use this formula
a = (vf - vi)/t we get a = (8 - 8)/1 = 0
There is no acceleration because there is no change in speed.