Oxygen masks for producing O2 in emergency situation contains potassium superoxide (KO2). The chemical reaction for reaction of K2O to produce O2 is shown below.                 4 KO2   +    2 H2O  +  4 CO2    →  4 KHCO3   +   3 O2   (A) if a person wearing such a mask exhales 0.65g of CO2 every minute, then how many moles of KO2 will be consumed in 15 minutes.   (B) calculate the number of grams of O2 that will be produced in 15 minutes.

Q: How many molecules of CO2 are produced if 67.23g of C2H8 are reacted in excess oxygen?

A: The combustion of C2H8 in the excess of oxygen can be represented by the following reaction:-…

Q: A 13.2010g sample of hydrated zinc sulfate, ZnSO4 • xH2O), was strongly heated until no further…

A: Given that,  Mass of hydrated zinc sulfate, ZnSO4 • xH2O = 13.2010 g  The final mass of solid…

Q: 5. How many moles of SO2 are required to convert 6.8 g of H2S according to the following reaction?

A: The moles of ClO2 in 7.2 g is, number of moles=given massmolar mass…

Q: 4. Phosphorus pentachloride reacts with water to give phosphoric acid and hydrogen chloride. In one…

A:

Q: 17. A fuel mixture used in the early days of rocketry consisted of two liquids, hydrazine (N2H4) and…

A:

Q: The boride Nb3B4 is made by the direct combination of niobium and boron at high temperature. How…

A: First write down the reaction between Nb and B. Then find out mol to mol ratio to calculate moles of…

Q: 1. Potassium superoxide, KO2, is used in rebreathing masks to generate oxygen according to the…

A: Limiting reagent:- A limiting reagent is a chemical  reagent that limits the amount of product that…

Q: 4. Phosphorus pentachloride reacts with water to give phosphoric acid and hydrogen chloride. In one…

A:

Q: In the preparation of iron from hematite (Problem 6.43), how many moles of carbon monoxide are…

A: Number of moles is equal to the ratio of mass to molar mass. The number of moles of reactant is…

Q: If a chemist reacts of 5.55 g of Cl2 gas with 3.88 g of solid P4 and produced 5.15 g of solid PCl5.…

A:

Q: 1.685 g of P4 was plaved in a reaction vessel which was pressurized with 1.284 g of O2 gas resulting…

A: Phosphorous P4 reacts with oxygen O2to form the solid phosphorous oxideP4O10.

Q: 1.685 g of P4 was plaved in a reaction vessel which was pressurized with 1.284 g of O gas resulting…

A: 1.685 g of P4 was plaved in a reaction vessel which was pressurizedwith 1.284 g of O2 gas resulting…

Q: When 1.57 mol O2 reacts with H2 to form H2O, how many moles of H2 areconsumed in the process

A: The balanced chemical reaction of O2 an H2 to form H2O can be expressed as,…

Q: Acetylene reacts with HCl in appropriate conditions to form phenolic chloride C₂H3 Cl, which is used…

A:

Q: hydrogen and oxygen are reacted and the water formed is collected at 25 derajat,where it has a…

A: The reaction taking place can be written as, => H2 (g) + O2 (g) -------> H2O (l)  Balancing :…

Q: 2. How many moles of water are e produced when 3.5 moles of hydrogen reacts with oxygen?

A: The balanced chemical reaction can be written as, 2H2+O2→2H2O

Q: (3)0L+ (3) →4CO,(g) + 6 H,0(g) noles of CO, are produced when 5.10 mol of ethane is burned in an…

A: Moles of ethane = 5.10 mol From balanced chemical reaction,  2 mol Ethane = 4 mol CO2  5.10 mol…

Q: For the following reaction:                         Co(OH)2 + CO2 → CoCO3 + H2O  If 2.44g of…

A:

Q: Tungsten Carbide (WC), used in making tools and jewelries, is produced by the reaction of tungsten…

A: Given: Practical yield of WC = 10.8 g Let theoretical yield of WC = y g By stoichiometry of…

Q: 1. Given the folowing reaction: Na,5,0, + AgBr - NaBr + Na:[Ag(S,0,):] (a) How many moles of Na 5:0;…

A:

Q: In 1997, at the United Nations Conference on Climate Change, the major industrial nations agreed to…

A: As per our guidelines we have allowed to answer the first three subpart for you. Kindly repost the…

Q: Consider the chemical equation: C2H5OH + CO2 = C6H12O6. How many grams of C6H12O6 can be produced…

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Q: How many grams of H2 are produced (assuming 100% yield) when 68.9g of Al reacts with 196 g of HCl

A:

Q: A mixture of N21g2 and H21g2 reacts in a closed containerto form ammonia, NH31g2. The reaction…

A: Balanced reaction for the given reaction is as follows. N2g+3H2g→2NH3g After reaction we have 3.0…

Q: Consider the mixture of ethanol, C2H5OH, and O2 shown inthe accompanying diagram. (a) Write a…

A: A combustion reaction is the reactions in which the organic carbon compound burns in the presence of…

Q: 6). Using the expression: 2NaOHjag) + H,SOdes) → Na,SO, (a9) + 2H,O) 4 How many grams of NaOH are…

A: Given mass of Na2SO4 = 60.0 g  Molar mass of Na2SO4 = 142.04 g.mol-

Q: Given: 2KClO3(s)  2KCl + 3O2(g) How many grams of oxygen are produced by the decomposition of…

A: The given reaction is, The given moles of potassium chlorate is 1.70 moles.

Q: A 13.2010g sample of hydrated zinc sulfate, ZnSO4 • xH2O), was strongly heated until no further…

A:

Q: If 0.634g of O2 is lost from 2.317g of a mixture of KClO3, find the percent by mass of KClO3 in the…

A: mass of the mixture of KClO3=2.317 gafter O2 is lost=0.643 g%by mass=remaining mass of the…

Q: Given the following equation 4Al + 3O2 ---> 2 Al2O3 a) calculate the theoretical yield of Al2O3…

A: Consider the given balanced equation as;                                   4 Al      +      3 O2…

Q: What mass of carbon dioxide  (molar mass 44 g /mol) is produced by the burning of 2 gallons (5340g)…

A:

Q: According to the balanced reaction below, calculate the quantity of moles of NHs gas that form when…

A:

Q: If exactly 4.089 moles of propanol (C3H8O)  is combusted in the presence of excess oxygen what is…

A: Given data: The moles of propanol combusted is 4.089 mol. To calculate: The mass of O2 was used in…

Q: A 0.777g sample of an organic 5) compound is burned completely. It produces 1.42g CO2 and 0.388g…

A: Given: Weight of sample = 0.777 g Mass of CO2 produced = 1.42 g Mass of H2O produced = 0.388 g…

Q: 4 IfI produce 0.5 grams of CO2, how many moles of C3HS reacted?

A: The balanced chemical equation for the combustion of C3H5 can be written as: 2C3H5  +  172O2  →…

Q: If 0.35g of Al reacts with excess diatomic oxygen, how many grams of the product Al2O2 are formed

A: Given, Mass of Al = 0.35 g   Moles of Al can be calculated as :

Q: Ammonia NH3 can be syntheszied by the following reaction: 2NO+5H2-->2NH3+2H20. If you start with…

A:

Q: Limestone(CaCO3) is used to remove acidic pollutants from smokestack flue gases in a sequence of…

A: Given: Mass of coal combusted = 65000 Kg  Percent by mass of sulfur in coal = 0.30 % And yield of…

Q: what is the theoritical yield of dinitrogen pentoxide in grams if 13.2g of nitrogen reacts with…

A: Amount of nitrogen = 13.2 g  Theoretical yield of dinitrogen pentoxide (N2O5) = ?

Q: Consider the gaseous reaction at 347 C          N2 + 3H2 ---> 2NH3 if 2.00 mole of N2 and 3.00…

A:

Q: Silicon nitride (Si3N4) a valuable ceramic, is made by the direct combination of silicon and…

A: Unbalanced reaction can be written as

Q: 2. A chemist analyzed a sample of a compound that was known to contain potassium, manganese, and…

A: Percentage composition of a given compound is depicted as ratio of the amount of each element to…

Q: How many moles of water (H2O) are produced if  100.0 grams of oxygen (O2 )are used?

A: Given :- mass of O2 used = 100.0 g  To calculate :- number of moles of H2O produced

Q: Cisplatin [Pt(NH3)2Cl2], an anticancer agent used for the treatment of solid tumors, is prepared by…

A: Limiting reagent is the reactant molecule that is consumed first in the reaction and therefore…

Q: How many carbon dioxide molecules are there in 14.4 gigatonnes of C02? How many carbon dioxide is…

A: Mole concept :-  1 mole = 6.022×1023 (Avogadro number) The mass of one mole of molecules of a…

Q: How many moles of O2O2 are needed to react with 2.80 molmol of C2H2C2H2?

A:

Q: Industrially, vanadium metal, which is used in steel alloys, can be obtained by reacting vanadium(V)…

A: The reaction taking place is, => 5 Ca + V2O5 ------> 5 CaO + 2 V Given : Mass of V2O5 = 1.540…

Q: Given the following decomposition reaction: 4C3H5O9N3  → O2 + 12CO2 + 10H2O +6N2. a. If 28.40 g H2O…

A: For part (a) Mass of H2O = 28.40 g We need to find out mass of CO2 that will be produced.  For part…

Q: CH4 + 20; >CO, +2 H;O 100 mole of methane is burned with 420 mole of air as the above reaction, if…

A:

Q: Calculate the if 20.0ml of (d=0.867g/ml) is burned in air a) how many grams of oxygen us needed for…

A: The balanced chemical reaction is the one in which the number of atoms is the same on both sides of…

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".