The composition by weight of three iron sulfur compounds, A, B, and C, is shown below. What is the relative proportion of sulfur, SA: Sg: Sc, in each compound? Compound Mass of S(g) Mass of Fe(g) A 2.672 4.654 4.434 5.150 C 3.466 3.019 1:2:4 1:1:2 2:3:2 2:3:4 1:2:3

Q: 1- An unknown compound has the following chemical formula: P2Ox where x stands for a whole number.…

A: Chemical formulae provide a means of describing any chemical material that uses the symbol of the…

Q: Calculate the mass (in g) of 1.9 x 10 24 molecules of PbSO 4. The molar mass of PbSO 4 is 303.27…

A: Given: Number of molecules PbSO4= 1.9×1024 molecules The molar mass of PbSO4= 303.27 g/mol To find:…

Q: 2NaI(aq)+Cl2(g)⟶I2(s)+2NaCl(aq)2NaI(aq)+Cl2(g)⟶I2(s)+2NaCl(aq)   How many grams of sodium iodide,…

A: The number of moles of a compound is calculated by taking the ratio between mass to the molar mass…

Q: The composition of a commercial cold remedy mixture is 87% aspirin, 7% caffeine, 6% vitamin C. What…

A: Mass of mixture that contains 5 g Caffeine = ? % of aspirin = 87 % % of caffeine = 7% % of vitamin C…

Q: A. Molar mass of an Element = Atomic mass of the Element Molar mass of a Compound = Molecular mass…

A: Given: Molar mass of C = 12.01 g/mol Molar mass of O = 16.00 g/mol Molar mass of Pt = 195.08 g/mol…

Q: 1. Use chemical symbols to generate the factor needed to convert the weight of the substance in uie…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Calculate the number of C atoms in 5.50 g of C. 6.02 x 10 23 C atoms O 3.31 x 10 24 C atoms O 5.01 x…

A:

Q: What is the theoretical yield (in g) of iron(III) carbonate that can be produced from 3.43 g of…

A: Answer = B 2.07 iron (iii) carbonate

Q: The toxic pigment called white lead, Pb3(OH)2(CO3)2, has been replaced in white paints by rutile,…

A:

Q: Three elements, A, Q, and Z, have the molar masses indicated in the table below. Given a compound…

A: empirical formula has to be determined using the given data

Q: 5. A compound with an empirical formula of CFBRO and a molar mass of 253.8 grams per mole. What is…

A: We have to predict the molecular formula of given compound.

Q: 2. Peroxyacylnitrate (PAN) is one of the components of smog. It is a compound of C, H N and O.…

A: Percent composition of ; C = 19.8 %  H = 2.50 % N = 11.6 %   The compund is made up of C , N , H and…

Q: Complete the table:   Compound Mass Moles Number of molecules CO2CO2 _____ 0.0124 _____ COCO _____…

A:

Q: Caffeine, a stimulant in coffee and tea, a molar mass of 194.19 g/mol and a mass percentage…

A: Given,

Q: An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by mass…

A: For calculation of Molecular formula, first of all we calculate the % of each atom , empirical…

Q: How many grams of NBr3 can be made from 525 g Br2  ?  N2   +   3 Br2   →   2 NBr3   +   44.0 kJ…

A: The reaction is as :-  N2 + 3Br2 ----> 2NBr3

Q: What is the mass in grams of 7.3 x 1024 molecules of lactic acid (C3H6O3), the compound responsible…

A:

Q: What is the molar mass of Al2(Cr2O7)3?    809.8554 g/mol B. 269.9518 g/mol C. 401.9448 g/mol…

A:

Q: 11. A compound containing only carbon, hydrogen, and oxygen is subjected to elemental analysis. Upon…

A: Given that the mass of CO2 and H2O formed by the burning of 0.7916 g of the compound  is 1.581 g and…

Q: A compound is composed of 54.50% O, 4.58% H and 40.92% C by mass. If the compound has a formula…

A: Empirical formula- It represents simplest whole number ratio of various atoms present in the…

Q: 20.  The number of moles in 112 g of acetylsalicylic acid (aspirin) C9H8O4 is    A. 1.61   B.…

A:

Q: How many oxygen atoms are present in 3,0 x 1023 molecules of Ca(NO3)2?   A. 6.0 x 1023   B. 1.5…

A: 1 molecule of Ca(NO3)2 have 6 oxygen atoms as NO3 have 3 oxygens and (NO3)2 will have 3 x 2 = 6…

Q: Determine the % composition of the following compounds - use correct number of sig figs and report…

A: Mass% is equal to the mass of given substance divided by total mass of the substance multiplied by…

Q: Methyl alcohol (CH3OH) is made by the reaction of carbon monoxide and hydrogen in the presence of…

A: Consider the given reaction. COg+2H2g→CH3OHl

Q: Silver bromide was prepared by reacting 200.0 g of magnesium bromide and an adequate amount of…

A:

Q: Mass of dibenzalacetone= 2.698g Mass of Benzaldehyde = 2.98g moles of dibenzalacetone…

A:

Q: Ferrocene has the formula Fe(C5H5)2 (a)Chemical amount of ferrocene in 100g of ferrocene (b)Number…

A: This can be solved by using the Molarity and Avogadro's number concept.

Q: Terephthalic acid is an important chemical used to manufacture polyesters and plasticizers. It…

A:

Q: How many hydrogen atoms are in the compound (NH4)2CO3? Alex has a big black tattoo of a teddy bear…

A: #Q.1: The given chemical formula is (NH4)2CO3.

Q: Cinnamic alcohol is used mainly in perfumery, particularly in soaps and cosmetics. Its molecular…

A: Given, Molecular formula of Cinnamic alcohol is C9H10O  Mass of sample = 0.668 g     Required,…

Q: . A compound with an empirical formula of C20H4 and a molar mass of 88 grams per mole. What is the…

A: 3) Given: Empirical formula = C2OH4  And molar mass = 88 g/mol.

Q: Determine the number of moles of carbon in 41.95 g41.95 g of leucine.

A: Given :- mass of leucine is 41.95 g  To calculate :- number of moles of carbon

Q: Mass of iron powder used (g)   Theoretical yield of K3[Fe(C2O4)3] ∙3H2O (g)   Actual yield of…

A: The species percentage yield equation will be equivalent to the mathematical ratio of the species…

Q: Ethylene glycol, the substance used in automobile antifreeze, is composed of 38.7% C, 9.7% H, and…

A: Let us assume we have 100 g of Ethylene glycol, then percentages become grams as follows –  mass of…

Q: An unknown organic compound contains 41.4 % carbon, 3.47 % hydrogen, and 55.1 % oxygen by mass. A…

A: Given data,Percentage of C=41.4%Percentage of H=3.47%Percentage of O=55.1%Moles of compound…

Q: The composition by weight of three iron sulfur compounds, A, B, and C, is shown below. What is the…

A:

Q: Two hypothetical ionic compounds are discovered with the chemical formulas XCI2 and YCI2, where X…

A:

Q: A compound has an empirical formula of CH3O and a molecular weight of 124 g, what is its molecular…

A: Empirical formula can be defined as the simplest whole number ratio of various atoms or elements…

Q: 5. Chloral hydrate (C2H3C1302) is a drug formerly used as a sedative and hypnotic. It is a compound…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Urea can be prepared by reacting ammonia with carbon dioxide.                               2 NH3…

A: To solve this problem we will use the balanced chemical equations .

Q: True or False? One mole of molecular O2 = 6.02 x 1023 O2 molecules. Mass of O2 in 100g of CO2 =…

A:

Q: Peroxyacylnitrate (PAN) is one of the components of smog. It is a compound of C, H N and O.…

A: Empirical formula :-  The formula which shows only relative number of atoms of different elements…

Q: Air has an approximate composition by mass of 76.7% N 2 and 23.2% O 2 . How many Ib-moles of air are…

A: Given the composition of air is 76.7% N2 and 23.2% O2.  Fraction of N2 = 76.7/100 = 0.767 Fraction…

Q: 3. Sodium carbonate is a chemical compound with formula Na,CO3. It is used in the manufacture of…

A: Ans.(1) Relative formula mass: The relative formula mass of a substance (made up of molecules) is…

Q: The first step in the reaction of Alka–Seltzer with stomach acid consists of one mole of sodium…

A:

Q: Nitric oxide is made from the oxidation of ammonia. What mass of nitric oxide can be made from the…

A: Number of moles of a substance in given mass  of it: Number of moles=Given massMolar mass

Q: What is the theoretical yield (in g) of iron(III) carbonate that can be produced from 3.43 g of…

A:

Q: A vitamin syrup for infants contains 27.44 mg of zinc sulfate monohydrate (ZnSO4.H2O) and 100.00 mg…

A: 1 mole = 6.022×1023 [ Avogadro's number ] The mass of one mole of molecules of a substance is called…

Q: Compound Mass Moles Number of molecules CO2CO2 _____ 0.0105 _____ COCO _____ 0.0196 _____ BrIBrI…

A: Number of moles = Mass of the compoundMolar massMass of the C2O4=?Number of moles = 0.0105…

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.