Calculate the molar mass of each of the following compounds:(a) hydrogen fluoride, HF(b) ammonia, NH3(c) nitric acid, HNO3(d) silver sulfate, Ag2SO4(e) boric acid, B(OH)3

Q: A particular protein sample is found to have 1 atom of iron in its chemical formula. If the mass…

A: Mass percent expresses the solute concentration in any mixture. The division of weight of dissolved…

Q: The composition of the acid, used in the manufacture of nylon, is 49.3% C, 43.8% O, and 6.9% H (by…

A: Given Percentage of C= 49.3% C, Percentage of O=43.8% O, Percentage of H= 6.9% H (by mass) the…

Q: What is the mass in grams of 4.11 x 1025 molecules of O,?

A: Given :- number of O2 molecules = 4.11 × 1025  To calculate :- mass (in grams)

Q: What is the mass, in grams, of 9.94 x 104 molecules of methanol (CH, OH) ?

A: Given molecules of methanol is 9.94 x 1024 It is known that 1 mole of  methanol has 6.023 × 1023…

Q: What is the molar mass of lead (IV) nitrate, Pb(NO3)4?

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Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

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Q: What mass of dinitrogen monoxide N2O, contains the same number of molecules as 3.00 g of…

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Q: A compound of carbon and hydrogen consists of94.34% C and 5.66% H, by mass. The molecular massof the…

A: Calculate the mass of C in the compound. Mass of C = 94.34100(178)                  =168 g Calculate…

Q: Hydrogen peroxide breaks down, releasing oxygen, in the following reaction: 2H,0,(aq) – 2H,0(1) +…

A: 2H2O2 (aq) → 2H2O(l) + O2 (g) From this Balanced chemical equation we get that ; 2 mol H2O2 produce…

Q: The elemental composition of the welding gas acetylene (C2H2) is 92.24% C and 7.76% H by mass. What…

A: Since from the formula of acetylene, we can say that the number of atoms of C and H are same in it.…

Q: Calculate the percentage by mass of the indicated element in the following compounds: (d) platinum…

A: The mass percentage of an element in the given molecule can be determined by the molar mass of a…

Q: What is the mass in grams of 4.57 × 10¹⁵ molecules of CO₂?

A: CO2 is a molecule which is made up of three atoms carbon and two oxygens. One mole of CO2 contains…

Q: What is the mass percent of iron in iron(II) oxalate, FeC2O4?

A: From the molecular formula we can get the molar mass from there we can get the weight of the…

Q: Hydrogen peroxide breaks down, releasing oxygen, in the following reaction: 2H,0,(aq) – 2H,O(1) +…

A: The given reaction is as follows: 2H2O2(aq) →2H2O(l) +O2(g) The moles of O2 produced = 4.10 mol The…

Q: perchlorate is a colorless , crystalline substance whose composition is 28.2 % K, 25.6 % Cl, and…

A: Given, Element %  of  K = 28.2 % = 28.2 g Element %  of  Cl = 25.6 % = 25.6 g Element %  of  O =…

Q: What is the molar mass of Ga2(SO4)3?

A:

Q: What is the molar mass of Ca(NO3)2?

A: Given that : We have to calculate the molar mass of Ca(NO3)2. Calcium nitrate contains 1 atom of…

Q: what is the molar mass of Ca3(PO4)2?

A: The molar mass of the compound can be calculated by the addition of the atomic mass of constituent…

Q: Mass analysis of a common drying agent of organic molecules reveals that it has the empirical…

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Q: What is the molar mass of the molecule Mg(OH)2

A: The molar mass of a molecule can be calculated by taking the sum of the atomic molar mass of all the…

Q: The chemical formula of lysine (a building block of proteins) is C6H14N2O2. Given that the formula…

A: Given, Formula mass of lysine, C6H14N2O2 = 146.19 amu = 146.19 g/mol

Q: The molar mass of the potassium alum salt, KAl(SO4)2 ● 12 H2O is?

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Q: What is the mass percent of chromium in Fe2(CrO4)3, which has a molar mass if 460 g/mol

A: Mass percent is the mass of the element or solute divided by the mass of the compound or solute. The…

Q: The element X forms the chloride containing 75.0% Cl, by mass. What is element X?

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Q: Calculate the mass in grams of 2.688 mol of       a. chlorophyll, C55H72N4O5Mg, responsible for  the…

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Q: What is the mass, in grams, of 1.40×1021 molecules of aspirin, C9H8O4

A: The number of constituent particles or atoms present in one mole of a substance is known as Avogadro…

Q: 3N22SO4 # of molecules: # of elements:

A: The name of Given molecule is sodium sulphate. So the molecular formula is Na2SO4 . Therefore number…

Q: A well-known reagent in analytical chemistry, dimethylglyoxime, has the empirical formula C2H4NO. If…

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Q: he molar mass of the hydrate, Co(NO,), · 6H,0.

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Q: What is the molar mass of the sodium alum salt, KAl(SO4)2 •12H2O?

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Q: 8. How many moles are there in 7.5 x 1043 molecules of H2SO,?

A: Given that , Molecules of H2SO4= 7.5×10^23

Q: What is the molar mass of Mg3(PO4)2, a substance formerly used in medicine as an antacid?

A: Molar mass of Mg3(PO4)2 is calculated as,

Q: If 5.467g of KAi(OH)4 was the limiting reagent in the synthesis of Alum, what would the mass of Alum…

A: Given, Mass of KAl(OH)4 = 5.467 g Yield of the reaction =98% = 0.98 To find: Mass of alum

Q: Calculate the mass in grams of 1.35 mol of     a) titanium white, TiO2 , used as a paint pigment.…

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Q: 4. a) How many particles ( b) What is the mass in grams of that salt? )are there in 1.25 moles of…

A: No. of particle = mol * NA     where NA is Avogadro number.

Q: One of the hydrates of MnSO4 is manganese(II) sulfate dihydrate . A 69.7 gram sample of MnSO4  2…

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Q: Chromium(III) oxide can be made from the reaction of sodium dichromate and ammonium chloride. What…

A: Given, mass of  sodium dichromate (Na2Cr2O7) = 108.7 g mass of ammonium chloride (NH4Cl) = 61.6 g…

Q: The molecular formula of allicin, the compound responsiblefor the characteristic smell of garlic, is…

A: Molar mass of a compound is the sum total of molar masses of the elements present in that particular…

Q: What is the mass, in grams, of 4.06 1023 molecules of aspirin, C9H8O4?

A: Number of molecules of aspirin = 4.06 × 1023 One mole contains Avogadro’s number of atoms.…

Q: A Group 2 metal with an electron configuration of [Ne]3s2 combines with fluorine (F2) to produce a…

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Q: traight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A: Given general formula is, CnH2n+1COOH And n=1  So, Molecular formula becomes CH3COOH We know ,…

Q: What is the mass, in grams, of 7.70 * 1020 molecules ofcaffeine, C8H10N4O2?

A: The number of molecules of caffeine is 7.70×10 20 molecules Avogadro’s number is 6.02×10 23…

Q: A newly discovered metalloprotein, which contains four atoms of Fe per molecule of protein, is found…

A: Given: Percent by mass of Fe in the compound = 0.747 %. And the number of atoms of Fe per molecule =…

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A: Given that :-  saturated carboxylic acids has the general formula CnH2n+1COOH  Atomic weights:- 1) C…

Q: One of the hydrates of CoSO4 is cobalt(II) sulfate hexahydrate . A 71.1 gram sample of CoSO4 6 H2O…

A: Answer

Q: The chemical formula of tyrosine (a building block of proteins) is C9H11NO3. Given that the formula…

A: Since %(m/m) composition means the weight % i.e weight of component X 100/ total weight of compound…

Q: what is the molar mass of CuSO4 X 5 H2O?

A: Molar mass = sum of ( Atomic mass X number of Atoms ) in 1 molecule Since in CuSO4 X 5 H2O we have…

Q: what is the mass percentage composition of the elements in the following compounds? Round to the…

A: mass percentage composition can be calculated by  mass % = mass of atom in compound X 100 / mass of…

Q: The empirical formula of quinine is C10H12NO. If its molar mass is 324.42 g/mol, what is its…

A: Empirical formula= C10H12NOEmpirical mass=(12.01×10+1.008×12+14.00+16.00)g…

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.