I pretty sure it’s level 3
Answer:
Molarity NaOH = 0.0263M
Explanation:
Molarity Acid x Volume Acid = Molarity Base x Volume Base
12.5ml x 0.60M = 285ml x M(base)
M(base) = 12.5ml x 0.60M / 285ml = 0.0263M
Using the relationship M1V1 = M2V2 where M1 and M2 are the molar concentrations (mol/L or mmol/ml) and V1 and V2 are the volumes of the solutions, we can arrive at the following answer for the given problem:
<span>15.0M (L of stock solution) = 2.35M (0.25L) *all volumes were converted to liters.
L of stock solution = (2.35*0.25)/15.0
Therefore, 0.0392L or 39.17 ml of stock solution is needed. </span>
Do 36-29 which is 7 and since 29 is before 36 it’s negative so -7
It is believed that the entire solar system was born f<span>rom an early nebula.</span>