Potassium superoxide, KO, is used in rebreathing gas masks to produce oxygen. The reaction of potassium superoxide with water is given as: ENCLOSE YOUR FINAL ANSWER) 4KO2 + 2H20 4KOH + 302 I1 2.85g KO2 reacts with 3.38g H20, answer the following: a) What is the limiting reactant? b) What is the excess reactant? c) How many grams of oxygen are formed? d) How many grams of excess reactant did not react?

Q: 9. How many mL of stock NH, is needed to make 100.0 ml of 1.00 M NH, if your stock solution is 14.8…

A: Given M1 = 14.8 M            M2 = 1.00 M            V2 = 100.0 mL            V1 = we have to find.

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A: Product can be made by applying appropriate reaction mechanism.

Q: A 786 mLmL NaClNaCl solution is diluted to a volume of 1.19 LL and a concentration of 3.00 MM . What…

A: Solution :       The amount of moles in the solution remains constant even after dilution. The…

Q: A 887 mLmL NaClNaCl solution is diluted to a volume of 1.45 LL and a concentration of 6.00 MM . What…

A: The initial volume of the NaCl solution is = 887 mL The initial concentration of the solution is =?…

Q: 170.0 mL of 0.12 M C2 H5NH2 with 285.0 mL of 0.20 M C2 H5 NH3 Cl

A: The pH of solution can be finding out by using Henderson Hasselbalch equation as: The given data…

Q: Which solution is the most concentrated? Convert all solutions to g/dL show work A 6.7% B 1:5  C…

A: Percentage concentration of solution (m/v) : It is used To define percentage of ratio of mass of…

Q: How is recrystallization of an impure solid accomplished?

A: Recrystallization is a technique used for the purification of a solid from impurities.

Q: A 50 mL sample of 50 % (m/v) acetic acid solution is added to water to give a final volume 75 mL.…

A: The given is 50% (m/v) acetic acid solution. 100 mL of solution contains 50g of acetic acid. Then 50…

Q: 15 g of solute is mixed with 100. g of solvent. The m/m% of this solution must be ___________ 15%.…

A: There are several ways of expressing the concentration of a solution by using a percentage. The…

Q: Weigh out 5g of table salt. Dissolve it in 50mL of distilled water in a container using a stirrer…

A: Given information is as follows: The mass of table salt = 5 g The volume of distilled water = 50 mL…

Q: A sample of 14000 ppm iron is Strong Acid has to be diluted between 95 and 180  ppm.  The method…

A: One gram in one liter is 1000 ppm.  1g1000 = 0.001g in 1 L  = 1 ppm1 ppm = 1 mg/L

Q: The density of a pure substance is its mass per unit volume. The density of hexane has been measured…

A:

Q: Select the best representation for an aqueous ammonium bromide (NH4Br) solution key a. ammonium ion…

A: Ionic compound:Ionic compound composed of cation which is positively charged (+charge) and an anion…

Q: A pure compound has a melting point of 102-103°C. Predictthe general effect on the melting point…

A: Solution - m.p. of pure compound = 102-103oC m.p. of impurity compound = 212-214oC Normal melting…

Q: You have a stock solution of 5% CaCl.  For your experiment you need 250mL of a working solution of…

A: The equation used during dilution is  M1×V1 =M2×V2 M1=initial concentration = 5% M2=final…

Q: __________ is a measure of energy randomization or energy dispersal in a system.…

A: According to the first law of thermodynamics, the energy cannot be created or destroyed but the…

Q: 1. Make 500 mL of a 1-in-5 dilution of a 2M stock solution. Volume of solution Volume H₂O added…

A: Answer: During dilution process, moles of solute in both the solutions, stock solution and diluted…

Q: 63 gallons of a 26% acid solution are mixed with 44 gallons of a 80% acid solution. What is the acid…

A:

Q: Describe how to create a 3.0 mL sample with concentration of 1.5 x 10-4 M from a starting stock…

A: Dilution Dilution process is the process to change (decrease) the concentration of solution in…

Q: solution 2 were taken and added to a flask and 50 mL of Di water were added to the flask. This is…

A: To calculate concentration of each solution, at first  let us calculate the concentration in terms…

Q: option y in the purification of crystals. g the solution after mixing. ng the crystals stallization…

A: Allow the solution cool down as slowly as possible, this will improve purity.Recrystallization also…

Q: 8. A powder is dissolved in water. The powder and water are respectively the: a) solvent and…

A: As we know solution is a homogeneous mixture consisting of a solute dissolved into a solvent. where…

Q: 1. Make up 0.1 M solutions (100 ml) of Na2HPO4 (FW=177.99) and NaH2PO4 (FW=137.99) using a 100 ml…

A: Molarity of any solution is defined as the number of moles of solute present in 1 liter of solution.…

Q: 75.0 mL portion of a 1.30 M solution is diluted to a total volume of 278 mL. A 139 mL portion of…

A:

Q: make 100.0 mL of either 1.0 M or 0.10 M ethanol (aqueous). Start with a stock ethanol solution that…

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Q: 1. A 0.512 g sample of CaCO, is dissolved in 12 M HCl and the mixture is diluted to 250 mL. a) How…

A:

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".