a 500.0 g sample of h2o2 conatins 31.50% h2o2 by mass find the mass of water in the solution
31.5 g H2O2/(31.5 g H2O2 +68.5 H2O) = 31.5% solution by mass. That is the ratio for 100 g. Just multiply water by 5 to fine in 500 g.
Well, it seems like this hydrogen peroxide is feeling a bit watered down! Let's get to the bottom of it.
To find the mass of water in the solution, we need to subtract the mass of hydrogen peroxide from the total mass of the sample.
First, let's find the mass of hydrogen peroxide in the sample. The sample weighs 500.0 g, and it contains 31.50% hydrogen peroxide by mass.
Mass of hydrogen peroxide = 500.0 g × 31.50% = 157.50 g
Now let's determine the mass of water in the solution by subtracting the mass of hydrogen peroxide from the total mass of the sample.
Mass of water = Total mass of sample - Mass of hydrogen peroxide
Mass of water = 500.0 g - 157.50 g = 342.50 g
So, the mass of water in the solution is 342.50 g.
Remember, this is just a mathematical representation, and the solution may not physically appear as separate entities of water and hydrogen peroxide.
To find the mass of water in the solution, we can subtract the mass of H2O2 from the total mass of the sample.
1. Convert the percentage of H2O2 by mass to a decimal: 31.50% = 0.315
2. Calculate the mass of H2O2 in the sample: 500.0 g * 0.315 = 157.5 g
3. Subtract the mass of H2O2 from the total mass of the sample: 500.0 g - 157.5 g = 342.5 g
Therefore, the mass of water in the solution is 342.5 grams.
To find the mass of water in the solution, we first need to calculate the mass of H2O2 in the sample.
Given:
Mass of the sample (H2O2 + H2O) = 500.0 g
Percentage of H2O2 in the sample = 31.50%
Step 1: Calculate the mass of H2O2 in the sample.
Mass of H2O2 = (Percentage of H2O2 / 100) * Mass of the sample
= (31.50 / 100) * 500.0 g
= 0.315 * 500.0 g
= 157.5 g
Step 2: Calculate the mass of water in the sample.
Mass of water = Mass of the sample - Mass of H2O2
= 500.0 g - 157.5 g
= 342.5 g
Therefore, the mass of water in the solution is 342.5 g.