Answer:
C. 30.0 g NaOH and add water until the final solution has a volume of 3.00 L.
Explanation:
Molarity of a substance , is the number of moles present in a liter of solution .
M = n / V
M = molarity
V = volume of solution in liter ,
n = moles of solute ,
from the question ,
M = 0.250M
V = 3.00 L
M = n / V
n = M * v
n = 0.250M * 3.00 L = 0.75 mol
Moles is denoted by given mass divided by the molecular mass ,
Hence ,
n = w / m
n = moles ,
w = given mass ,
m = molecular mass .
From the question ,
n = 0.75 mol NaOH
m = molecular mass of NaOH = 40 g/mol
n = w / m
w = n * m
w = 0.75 mol * 40 g/mol = 30.0 g
Hence , by using 30.0 g of NaOH and dissolving it to make up the volume to 3 L , a solution of 0.250 M can be prepared .
A reaction in which oxidation numbers change is the answer! :D
☆ Dont forget to mark brainliest ☆
One way is studying through a satelite in space already.
Acetic Acid or Vinegar has London Dispersion Forces, Dipole Dipole forces and Hydrogen bonding forces.
Since Dipole Dipole is stronger than both hydrogen bonding and London Dispersion, the strongest one is dipole dipole.
I cannot draw a diagram, sorry.
Oxygen is diatomic and nitrogen is not
