In the process of obtaining lead from PbS, or galena, the galena is “roasted” (heated in the presence of oxygen), so that the following reaction occurs: 2PbS(s) + 3O2(g) --> 2PbO(s)  + 2SO2(g) If 50.0 g of PbS are mixed with 25.0 g of oxygen, how many grams of PbO should form?

Q: A three-step process for producing molten iron metal from Fe2O3 is: 3Fe2O3 + CO → 2Fe3O4 + CO2…

A: Since CO is present in excess, Fe2O3 is the limiting reagent in the first step. Given mass of Fe2O3…

Q: 9. The following is the balanced equation for the combustion of butanol in oxygen: CAH9OH@ + 6 O2 →…

A: The balanced combustion reaction for butanal is given below -   C4H9OH + 6O2 ---> 4CO4 + 5H2O…

Q: a) Patients who have a zinc deficiency can take tablets consisting of a hydrated zinc sulfate,…

A: #(a): Mass of hydrated zinc sulfate tablet, ZnSO4.XH2O = 5.073 g  Mass of anhydrous sulfate,…

Q: Another component of acid rain is nitric acid, which forms when NO2NO2, also a pollutant, reacts…

A: The molar mass of NO2 is 46 g/mol So 46g = 1 mole So, 19Kg = 413 moles.

Q: The compound HgO can be decomposed to form Hg and O2. This can be represented at the atomic level by…

A: According to law of conservation of mass, the total mass of reactants reacting should always be…

Q: In the room, the police also found a suspicious amount of CO2 in the air, which is produced when…

A: Combustion reactions of methanol is 2CH4O+3H2O→2CO2+4H2O 2 mole of methanol is producing 2 moles of…

Q: The gre ench chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by doing a…

A: According to ideal gas law the volume of a gas is directly proportional to the number of moles of…

Q: Hydrazine (N2H4) and hydrogen peroxide (H2O2) have been used as rocket propellants. They react…

A:

Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium…

A: First of all we need to find the limiting reagent. Using the balanced reaction we can find the…

Q: Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and…

A: Percentage yield of a compound can be calculated using following formula: Percentage yield =…

Q: If 5.7 g of chromium metal reacts with 10.0 g of oxygen, how many grams of chromium (III) oxide (MM…

A: Given data: Mass of Chromium metal (Cr) = 5.7 g, Mass of Oxygen (O2) = 10.0 g. The given balanced…

Q: For the balanced chemical reaction 4Al + 3O2 → 2Al2O3 how many grams of Al2O3 can be made by…

A:

Q: The low-grade iron ore taconite, which contains Fe3O4, is concentrated and made into pellets for…

A: Given : Mass of ore used = 1 ton = 1 X 106 g                                                (since 1…

Q: Gaseous methane (CH4) reacts with gaseous oxygen gas (O₂) to produce gaseous carbon dioxide (CO₂)…

A:

Q: how many grams of aluminum oxide are produced?

A: Given :- mass of Fe2O3 = 15.9 g  To calculate :- mass of Al2O3 (in g)  number of moles = mass/molar…

Q: Titanium is a strong, lightweight, corrosion-resistant metal that is used in rockets, aircraft, jet…

A: Given  Mass of TiCl4   =  3.54 × 107 gram  Mass of Mg     =  1.13 × 107 gram  Actual yield of Solid…

Q: Combustion of hydrocarbons such as butane (C H10) produces carbon dioxide, a "greenhouse gas."…

A: Since the hydrocarbons are mainly composed of C and H-atoms, therefore, their complete combustion in…

Q: Solid diiodine pentoxide is used in respirators to remove carbon monoxide from air. The reaction…

A: We have to predict the mass of CO  as well as mass of I2 .

Q: Gaseous butane  CH3CH22CH3  reacts with gaseous oxygen gas  O2  to produce gaseous carbon dioxide…

A:

Q: For the reaction 5.31 grams of iron (iii) ocide are moxed with excess hudrochloroc acid. The…

A: The correct answer is given below

Q: Benzene reacts with bromine to produce bromobenzene and hydrogen bromide as provided by the chemical…

A: First calculate the moles of benzene and bromine :  a) moles of Benzene = ( mass / molar mass)…

Q: The reaction between potassium chlorate and read phosphorus takes place when you strike a match on…

A:

Q: The refining of aluminum from Bauxite ore (which contains 50.% Al2O3 by mass) proceeds by the…

A: The number of moles of a species is calculated by the expression (1) in which n is the number of…

Q: Nitrobenzene, CH,NO,, is an important raw material for the preparation of dyes. It is prepared from…

A:

Q: The following consecutive reaction set is used as the basis of a method for producing nitric acid.…

A: The most common process for manufacturing nitric acid is Ostwald process. The process was first…

Q: Silver sulfadiazine burn-treating cream creates a barrier against bacterial invasion and releases…

A: GIven: The mass of Ag2O (Silver oxide) is 25.3 g The mass of C10H10N4SO2 is 50.6 g The molar mass of…

Q: Aqueous hydrochloric acid (HC1) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium…

A: Given data, mass of NaCl produced= ? , molar mass= 58.45 g mol-1  mass of HCl=0.73 g, molar mass of…

Q: Thermite welding is an exothermic reaction, which produces molten iron that permanently binds metals…

A: Given information: Grams of aluminium = 55 g Grams of ferric oxide = 75 g

Q: heating magnesium metal in the presence of oxygen. When 10.1 g of Mg reacts with 10.5 g of O2, 11.9…

A: Percent yield is the ratio of actual yield to the theoritical yield.

Q: 3. Titanium is a strong, lightweight, corro sion-resistant metal that is used in rockets, aircraft,…

A: According to the given reaction, one mole of TiCl4 reacts with 2 mole of liquid Mg to produce one…

Q: A truckload of apples weighs 2550lb. If 5 (exact) apples weigh 1250g: how many apples are in the…

A: Mass of 5 apple = 1250 gMass of 1 apple= 1250g5= 250 gMass of apples in truck = 2550 lb1 lb =…

Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium…

A: Mass of HCl = 6.93 gm  Moles of HCl = 6.93/36.5 = 0.190 Mass of NaOH = 10.9 gm  Moles of NaOH =…

Q: Liquid octane (CH (CH, CH; reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide…

A: The given data is as follows: The mass of octane = 60.5 g The mass of oxygen gas = 424 g The…

Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium…

A:

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

A: Mass of V2O5 = 1540 g mass of Ca = 2120 g

Q: Sigmund Freud needs some warmth to work on his personality development theories.  He decides to…

A:

Q: When 64.7 g of HI (127.9 g/mol) forms from the reaction of hydrogen gas with excess iodine, how many…

A: Given, H2 + I2 → 2 HI mass of HI produced = 64.7 g  molar mass of HI = 127.9 g/mol mass of Hydrogen…

Q: Liquid hexane  CH3CH24CH3  reacts with gaseous oxygen gas  O2  to produce gaseous carbon dioxide…

A: The chemical equation :  CH3(CH2)4CH3(aq) + O2(g) ----> CO2(g) + H2O(g)  Mass of hexane = 4.31 g.…

Q: 2. One reaction step in the conversion of ammonia to nitric acid involves converting NH3 to NO by…

A:

Q: One commercial system removes SO, emissions from smoke at 95.0°C by the following set of balanced…

A: The answer to the following question is-

Q: If you start with a mixture of Nacl and KClO3 that weighs 3.00g, and the mass of the sample…

A: Given, The mixture of NaCl and KClO3. Weight of the mixture is ---- 3.00g The mass of the sample…

Q: A side reaction in the manufacture of rayon from wood pulp is 3CS2+6NaOH→2Na2CS3+Na2CO3+3H2O  How…

A: Given information: Moles of NaOH = 2.61 mol Volume of liquid = 92.5 mL Density of CS2 = 1.26 g/mL

Q: For the following reaction, 14.5 g of carbon monoxide are allowed to react with 6.11 grams of water.…

A: The balanced chemical equation is: CO(g)+H2O(l) → CO2(g)+H2(g) The reactant present in smaller…

Q: The reaction of calcium hydride with water can be used to prepare hydrogen gas:       How many g of…

A:

Q: The reaction between aluminum and iron(III) oxide (known as the thermite reaction) can generate…

A: From a balanced reaction we can calculate the mass of product formed in the reaction .

Q: For this reason there has been a great deal of international discussion about whether to regulate…

A: (A) When decane, C10H22 is burnt with air , then Carbon dioxide gas and water vapour are produced.…

Q: The reaction between potassium chlorate and red phosphorus takes place when you strike a match on a…

A: Balanced reaction will be as follows- 10 KClO3 (s) + 3P4(s)→3 P4O10(s)+ 10 KCl (s)

Q: A major industrial use of hydrochloric acid is in metal pickling. Fe,0,6) + 6HCI (ae) - 2FeCi, (ag)…

A:

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.