Potassium hydroxide KOH is a strong base which can completely ionize to form potassium and hydroxide ions.
The equation representing ionization of KOH,
The mole ratio of hydroxide to KOH from the above equation is 
The given concentration of KOH solution=0.30M
Calculating the concentration of hydroxide ions present in 0.30M KOH solution:
Therefore the concentration of hydroxide ion will be equal to 0.30 M in a 0.30 M KOH solution.
Answer: Exosphere
Explanation: Exosphere. This is the outermost layer of the atmosphere. It extends from the top of the thermosphere to 6,200 miles (10,000 km ) above the earth.
My answer would be B there you go
Answer: Through diffusion
Explanation:
Oxygen can be defined as the most abundant element on earth. It is a gas at room temperature. It becomes the part of the earth crust by the process of diffusion.
Diffusion is a process of movement of molecules from a region of high concentration to the low concentration. The oxygen remains in high concentration in the atmosphere diffuses into earth crust at low concentration.
Answer:
34.9103 or 34.9 g
Explanation:
Remember Density is a broken heart: m/v.
In this scenario (Let x = # of grams in the sample of gasoline),
D = 0.7198 g/mL = x g / 48.5 mL
So,
(0.7198 g/mL) * (48.5 mL) = x g
x g = 34.9103 = 34.9 g (Accounting for Significant Figures)
