Molality = mass of H2O2×1000/molar mass×mass of solvent
= 29×1000/34×71
= 12.0 mole/Kg
Do sample problem 13.6 in the Silberberg 8th edition. Hydrogen peroxide is a powerful oxidizing agent;...
Hydrogen peroxide is a strong oxidizing agent. It I used in dilute solutions for bleaching hair and used in concentrated solution as a rocket fuel. A concentrated solution of hydrogen peroxide is 3.3% by mass or the density of 1.11 g/M oh leaders. Calculate a mole fraction of H202, molarity, and molality.
pleass answer both iClicker Problems 16-1 & 16-2 • Find the concentration of calcium (by mass, in ppm) in a 45.0 g pill that contains 1.8 mg of Ca. a). 0.4 b). 40 C). 400 d). 4000 e). 4.0 Hydrogen peroxide (H,O,) is a powerful oxidizing agent used in concentrated solution in rocket fuels and in dilute solution as a hair bleach. An aqueous solution of H,O, is 30.0 % by mass and has a density of 1.11 g/mL. Calculate...
a. With the help of a Lewis diagram, predict the molecular geometry of the following compounds. a. SbF5 b. PF3 C. COCI2 (9 marks) b. Hydrogen peroxide is a powerful oxidizing agent; it is used in concentrated solution in rocket fuel, but in dilute solution in hair bleach. An aqueous solution of H2O2 is 30.0% by mass and has a density of 1.11 g/mL. Calculate a. molality b. mole fraction of H202 c. molarity (7 marks) c. Calculate the vapor...
Delete CHE 120 Pb.9.Liquid hydrogen peroxide, an oxidizing agent used in many rocket fuel mixtures, releases oxygen gas on decomposition: AHon=-196.1 kJ -2H2O(I)O2(g) 2H2O2(l) What mass of H2O2 decomposes if 2510 kJ is released?
Liquid hydrogen peroxide is an oxidizing agent in many rocket fuel mixtures because it releases oxygen gas on decomposition as shown below. 2 H202 (1) ► 2 H20,() + O2 (g) AHrxn = -196 kJ How much heat istreleased when 25.0 grams of H202 decomposes? Molar Mass(H2O2) = 34.01 g/mol Ca.-133 kJ b.-533 k] c-72.0 kj 0-288 kJ e-144 kJ
72. Hydrogen peroxide is a very common oxidizing agent. It has been used as an oxidizer for rocket engines, it is a readily available antiseptic for home use and we have used it several times in the general chemistry lab. Below is some thermodynamic data for hydrogen peroxide xide at 25 C H (kJ/mol AG (k.J/mol Chemical Thermodvnamics of hydrogen 188 266 H20:1) H2(g) 02(g) H:0:(1) 20H(g H2O2(g) → 20H(g) H202(g) HO:(g) +H(g) H2O2(l) H2O(l)+%O2(g) 120 188 174 332 365...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...