True, this is because they are too small to be studied as if they were an animal, plant, or geological formation such as a rock or crystal.
Answer: 52.8 g of 
Explanation:
To calculate the moles, we use the equation:
a) moles of octane
b) moles of oxygen
According to stoichiometry :
2 moles of 
require 25 moles of 
Thus 0.150 moles of require=
of
Thus is the limiting reagent as it limits the formation of product and is the excess reagent.
As 2 moles of give = 16 moles of
Thus 0.150 moles of give =
of
Mass of 
Thus 52.8 g of will be produced from the given masses of both reactants.
Answer: 0.050 M NaCl
Explanation:
So the original solution is diluted from a total volume of 10.0 mL to 100.0 mL.
The M represents molarity which is moles of NaCl divided by the total solution volume in liters.
So if our original volume were to be increased by a factor of 10 then the denominator would be changed.
Here is a mathematical illustration:
5/10 = .5
5/100 = .05
I would love to help but it is 3 or is it 3 million?
