Answer:
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Explanation:
The correct answer to this question is 0.2500 mol
Formula to calculate moles:
Moles = mass ÷ molar mass (n=m/M)
Mass = 50.15g
Atomic mass: 200.59 amu
Moles = 50.15g/200.59
= 0.2500 mol.
Every time you add water to a solution the concentration decreases<span />
PH is the measure of concentration of OH- in the solution
<span>Her average speed would be the total distance so 7 kilometers divided by the total time or 7/1.5 which would be 4 2/3 km/hr.
Her average velocity would be the directed distance of 5 km divided by 1.5 (time) or 3 1/3 km directed 36.87 degrees East of North</span>