3% Hydrogen solution is a and that can cause You should prevent contact between

Question

3% Hydrogen solution is a and that can cause You should prevent contact between the solution and your eyes, skin and clothing Avoid ingesting the solution. A student performed the experiment as described the lab manual using 6.0 ml of an hydrogen peroxide solution with a density of 1.01 g/ml. The water temperature was 294 k and the pressure was 31.50 in Hg the the in the peroxide solution they 43.34 ml change in system volume. Use the lab manual to help you solve this question. The barometric pressure.in (1 decimal place) The water vapor pressure at the water temperature (1 decimal place) The pressure exerted by the collected oxygen gas at the water temperature (1 dec place) or 1.03 atm (2 dec places) The volume of collected oxygen gas is 0.0433 (4 significant figures).Using R = the number of moles of collected oxygen gas is times 10^- 3 So upon the number of moles of oxygen gas collected the number of moles of in the original 5.00 ml. sample is 3.70 (2 dec place) So, the mass of peroxide (MW = 34.02.).is 0.126 g(3 dec places) The mass of the peroxide solution is g (2 dec places) The mass of peroxide in the solution is % (2 dec places)

Explanation / Answer

Given

Volume of peroxide solution = 5 g

density of peroxide solution = 1.01 g/ml

Mass of peroxide solution = Volume / density = 5 g / 1.01 g/ml = 4.95 g

from the previous calculation in question 2

mass of peroxide = 0.126 g Answer

mass percent of peroxide in the solution = (mass of peroxide / mass of peroxide solution) * 100 %

mass percent of peroxide in the solution = (0.126 g / 4.95 g) * 100 % = 2.485 % answer

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