1. If you make a solution by adding water to 75mL of ethanol until the total volume of the solution is 376mL, what is the percent by volume of ethanol in the solution, (show your solution)
2. A bottle of hydrogen peroxide also known as agua oxinada is labeled 3%(v/v). How many mL of agua oxinada are in a 400mL bottle of this solution? (show your solution)
3. What is the percent by mass if 8.0g copper is added to enough zinc to produce 100g of an alloy? (show your solution)
4. You have 200g or a solution that contains 30g of hydrochloric acid (HCI), what percentage of your solution is made up of HCI acid?
2. A bottle of hydrogen peroxide also known as agua oxinada is labeled 3%(v/v). How many mL of agua oxinada are in a 400mL bottle of this solution? (show your solution)
3. What is the percent by mass if 8.0g copper is added to enough zinc to produce 100g of an alloy? (show your solution)
4. You have 200g or a solution that contains 30g of hydrochloric acid (HCI), what percentage of your solution is made up of HCI acid?
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The percent by volume of ethanol in the solution : 20%
Further explanation
The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, parts per million (ppm), or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.
There are several concentration units in percentages that can be used:
Percent Volume (% V / V), total volume (m_l) of solute in 100 m_l of solution.
% volume = (volume of solute : volume of solution) x 100%
Given
The volume of ethanol=75 m_l
The volume of solution = 375 m_l
Required
The percent by volume of ethanol
Solution
Input the value :