If 5.00G of ethanol is added to 15.0G of water, what is the % concentration of ethanol in water ? (% to the correct number of significant figures) and the formula used to get there. THANKUUUU
To calculate the % concentration of ethanol in water, we need to determine the mass of ethanol and water separately, and then divide the mass of ethanol by the total mass of the solution (ethanol + water) and multiply by 100.
Given:
Mass of ethanol = 5.00 g
Mass of water = 15.0 g
Step 1: Calculate the total mass of the solution.
Total mass = Mass of ethanol + Mass of water
Total mass = 5.00 g + 15.0 g
Total mass = 20.0 g
Step 2: Calculate the % concentration of ethanol.
% Concentration of ethanol = (Mass of ethanol / Total mass) x 100
% Concentration of ethanol = (5.00 g / 20.0 g) x 100
Now we can calculate the % concentration of ethanol in water.
% Concentration of ethanol = (5.00 g / 20.0 g) x 100
% Concentration of ethanol = 25.0 %
To the correct number of significant figures, the % concentration of ethanol in water is 25%.
Formula used: % Concentration of ethanol = (Mass of ethanol / Total mass) x 100