Answer:
0.4 * 10⁻⁶mol
Explanation:
The unit conversion required are ,
1 μ M = 10⁻⁶ M
1 L = 1000 mL
1 mol = 1000 mmol
molarity of a solution is given as -
Molarity (M) = ( w / m ) / V ( in L)
where ,
m = molecular mass ,
w = given mass ,
V = volume of solution ,
Hence , the unit is ,
M = mol / L
from the question ,
0.4 μ M = 0.4 * 10⁻⁶ M
Now,
0.4 * 10⁻⁶ M = 0.4 * 10⁻⁶ mol / L
Since ,
1 L = 1000 mL
and ,
1 mol = 1000 mmol
0.4 * 10⁻⁶ mol / L = 0.4 * 10⁻⁶ * 1000 mol / 1000 mL = 0.4 * 10⁻⁶mol
