What was the mass (in g) of the hydrogen peroxide that decomposed?

Q: A solution of acetic acid (CH3COOH) and water is boiling at 103.1 °C. A sample of the vapor above…

A: In  condensed liquid of 100 g (Let say) Acetic acid is 50%  i.e  50 g Water is 100%-50% = 50% i.e.…

Q: The vapor pressure of CCl3FCCl3F at 300 KK is 856 torrtorr.       If 11.5 gg of CCl3FCCl3F is…

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Q: What is the boiling point of a mixture composed of 55.1 g HOCH2CH3 and 399 g H2O? For H2O, Kb =…

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Q: Consider a system where 2.40 mol of CH3CN(g) are converted into CH3CN(I) at 1.00 atm and 82.0 °C.…

A: Given that : Number of moles of CH3CN = 2.40 moles Pressure = 1.00 atm Initial temperature = 82.00C…

Q: Several emergent properties of water contribute to the suitability of the environment for life. How…

A: The correct statements are : 2) The partial positive region of water molecules are attracted to…

Q: It was determined that 63.5 kJ of heat is needed to vaporize enough aniline (CsHsNH2) liquid at its…

A: First of all, we need to calculate the number of moles of aniline which is vaporized. Volume of…

Q: Octanol (C8H18O) is a compound used for the synthesis of important component in perfume production…

A: Claussius clapeyron equation help us in prediction of enthalpy of vaporization, vapor pressure of a…

Q: Liquid propane (C3H8) is stored in pressurized cylinders to be used as a fuel (for grilling, etc.).…

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Q: HF(aq)HF(aq) and Ba(OH)2(aq)Ba(OH)2(aq) Express your answer as a balanced chemical equation.…

A: Given, HF(aq) and Ba(OH)2(aq)

Q: A solution containing 1.470 g of dichlorobenzene in 50.00 g of benzene boils at 80.60 degree C and a…

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Q: A certain substance X condenses at a temperature of 90.5 °C. But if a 600. g sample of X is prepared…

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Q: A solution of methyl acetate (C3H6O₂) and water is boiling at 79.8 °C. A sample of the vapor above…

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Q: 8. The diagram below is an example of Liquid-Solid-Temperature Composition Phase Diagram of…

A: The given phase diagram is:

Q: A certain substance X condenses at a temperature of 114.3 °C. But if a 250. g sample of X is…

A: mass of urea((NH2)2CO) = 12.12 gmolar mass of urea = 60.06 g/molT(solvent) = 114.3oCT(solution) =…

Q: A fentanyl addict has spilled 1000 L of gasoline into the street (MW=117 g/mol, density=0.7 g/mL).…

A: Given :- Volume of gasoline (solvent) = 1000 L = 1000000 mL Molar mass of gasoline (solvent) = M1 =…

Q: How much heat (in kJ mol–1 to two decimal places) is required to melt 300.0 g of water (H2O; 18.02 g…

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Q: Lattice enthalpy for NaCl is +788 kJ mol¯¹ and AH¸ = −784 kJ mol¯¹. Enthalpy of Hyd solution of NaCl…

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Q: Calculate the mass of O, that is dissolved in the water inside a 100 L home aquarium at 297 K?…

A: Given data,Volume of water=100LAtmospheric pressure=1.01barKH=1.33×10-3molL-1bar-1Molar mass of…

Q: please help on this problem

A: Mole fraction is the ratio of number of moles of a substance and total number of moles in the…

Q: A closed vessel contains water and a gaseous mixture of N₂ and He at T = 298 K. The mole raction of…

A: According to the question we have, The temperature of the closed vessel = 298 K The mole fraction of…

Q: Calculate the boiling point and freezing point of 2.00g of Fe(NO3)2 in 15g H2O. Kf = 1.86…

A: Given that, 2.00 g of Fe(NO3)2 is dissolved in 15 g H2O The molal freezing point depression constant…

Q: Diethyl ether, CH;OC2Hs, is a component in some hair sprays, partly because it evaporates very…

A: Molar volume = 103.9 cm3  Temperature = 25°C

Q: At 25.0 °C the Henry's Law constant for helium (He) gas in water is 3.7 × 10¯*M/atm. Calculate the…

A: In the given question we have to calculate the mass in gram of helium gas which is dissolved in…

Q: Unfortunately, you ran out of time and were unable to carry out the gravimetry. Your demonstrators…

A: We first determine the percent of iodine. And convert all the elemental percentages to moles. And…

Q: Ethylene glycol, C2H6O2, is infinitely miscible (soluble) in water. It is a nonelectrolyte that is…

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Q: Calculate the boiling point for 0.41 mol ethylene glycol and 0.18 mol KBr in 128 g H₂O.

A: Answer: When a non-volatile solute is added in the water, it causes an elevation in its boiling…

Q: With the aid of a phase diagram, explain what is meant by a supercritical fluid. Give examples of…

A: The objective of the question is to understand the concept of a supercritical fluid, its…

Q: The standard enthalpy of vaporization (AH°vap) of trans-crotononitrile (CH3(CH)2CN) is 38.8 kJ/mol.…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.