Answer:
Option B. 25mL
Explanation:
Step 1:
Data obtained from the question:
Molarity of stock solution (M1) = 6M
Volume of stock solution needed (V1) =..?
Molarity of the diluted solution (M2) = 0.5M
Volume of diluted solution (V2) = 300mL
Step 2:
Determination of the volume of the stock solution needed.
Using the dilution formula, we can easily find the volume of the stock solution needed as follow:
M1V1 = M2V2
6 x V1 = 0.5 x 300
Divide both side by 6
V1 = (0.5 x 300) /6
V1 = 25mL
Therefore, 25mL of 6M NaOH is needed.
Yes, it is possible if the death rate exceeds that of the birth rate. This death rate could be due to a dramatic change in climate, health issues in a population, etc.
D. It is the heat required to change a gram of substance from a liquid to a gas.
Explanation:
The heat of vaporization is the heat required to change a gram of substance from a liquid to a gas.
- It is also known as the enthalpy of vaporization.
- The heat of vaporization is the quantity of heat needed to change one gram of a substance from liquid to gas.
- This heat of vaporization is dependent on the pressure conditions the process is taking place.
- Different liquids have their heat of vaporization.
learn more:
Heat of vaporization brainly.com/question/9529654
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The answer should be 1 AU as it’s just about close to the number of miles from earth to sun.
Earth to sun in miles is -92.96
1 AU is- 92955807.3
Answer =B) folding of rock
