A solution contains 14% by mass of h2so4.find the number of moles of h2so4 in 155g of solution
Well, well, well, looks like we have ourselves a chemistry problem! Let's see if I can add a little humor to the equation.
First things first, we need to find the number of moles of H2SO4 in the given solution. We know that the solution contains 14% H2SO4 by mass and we have 155 grams of the solution.
Now, to determine the number of moles, we need to use the molar mass of H2SO4, which is approximately 98 g/mol.
So, if we have 155 grams of the solution and it's 14% H2SO4, then the mass of H2SO4 in the solution would be 155 grams multiplied by 0.14 (14% written as a decimal).
Now, let's do the math - 155 grams multiplied by 0.14 is approximately 21.7 grams of H2SO4 in the solution.
To find the number of moles of H2SO4, we divide the mass of H2SO4 by its molar mass.
So, 21.7 grams of H2SO4 divided by 98 g/mol (molar mass of H2SO4) gives us approximately 0.221 moles of H2SO4 in the solution.
There you have it! Approximately 0.221 moles of H2SO4 in 155 grams of the solution. I hope my antics didn't dilute your understanding!
To find the number of moles of H2SO4 in 155g of the solution, we need to calculate the mass of H2SO4 in the solution first.
Step 1: Calculate the mass of H2SO4 in the solution.
Given that the solution contains 14% by mass of H2SO4, we can calculate the mass of H2SO4 as follows:
Mass of H2SO4 = (14/100) * Mass of the solution
Mass of H2SO4 = (14/100) * 155g
Mass of H2SO4 = 21.7g
Step 2: Calculate the number of moles of H2SO4.
To calculate the number of moles, we need to know the molar mass of H2SO4. It can be calculated by adding the atomic masses of hydrogen (H), sulfur (S), and oxygen (O).
Molar mass of H2SO4 = (2 * atomic mass of H) + atomic mass of S + (4 * atomic mass of O)
Molar mass of H2SO4 = (2 * 1.008) + 32.06 + (4 * 16.00)
Molar mass of H2SO4 = 98.09 g/mol
Now, we can calculate the number of moles of H2SO4 as follows:
Number of moles of H2SO4 = Mass of H2SO4 / Molar mass of H2SO4
Number of moles of H2SO4 = 21.7g / 98.09 g/mol
Number of moles of H2SO4 ≈ 0.221 moles
Therefore, there are approximately 0.221 moles of H2SO4 in 155g of the solution.
To find the number of moles of H2SO4 in 155g of solution, you need to follow these steps:
Step 1: Calculate the mass of H2SO4 in the solution.
The solution contains 14% H2SO4 by mass, which means that 155g of solution contains 14% of H2SO4.
Mass of H2SO4 = Mass of solution × Percentage of H2SO4
Mass of H2SO4 = 155g × 0.14
Mass of H2SO4 = 21.7g
Step 2: Calculate the number of moles of H2SO4.
To calculate the number of moles, you need to divide the mass of H2SO4 by its molar mass.
The molar mass of H2SO4 is:
2(1.01g/mol) + 32.07g/mol + 4(16.00g/mol) = 98.09g/mol
Number of moles of H2SO4 = Mass of H2SO4 / Molar mass of H2SO4
Number of moles of H2SO4 = 21.7g / 98.09g/mol
Number of moles of H2SO4 ≈ 0.221 mol
Therefore, there are approximately 0.221 moles of H2SO4 in 155g of the solution.
155 g x 0.14 = grams H2SO4.
mols = grams/molar mass