3.122 The natural abundances of the two stable isotopes ofhydrogen (hydrogen and deuterium) are 99.99 percent 11H and 0.01 percent 12H. Assume that water exists as eitherH2O or D2O. Calculate the number of D2O molecules inexactly 400 mL of water (density 1.00 g/mL).

Q: 3.150 The compound 2,3-dimercaptopropanol(HSCH2CHSHCH2OH), commonly known as BritishAnti-Lewisite…

A: Given: Molecular formula of 2,3-dimercaptopropanol or BAL = HSCH2CHSHCH2OH = C3H8OS2 Molecular mass…

Q: Methyl tertiary butyl ether, or MTBE, is currently used as an octane booster in gasoline. It has…

A: The question  is based on the concept of mass percentage. mass percentage is defined as the  mass of…

Q: 3. In a chemical atomic mass determination, the tin content of 3.7692 g of SnCl, was found to be…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Barium chloride dihydrate has the formula BaCl2  ·  2H2O. Assume there is another hydrate (BaCl2…

A:

Q: If all 6.0 x 105 g of carbon (C) is present as C106H263O130N16P, how many moles of C106H263O130N16P…

A: Given :  Mass of carbon present per square kilometre of ocean  = 6.0 x 105 gm  Molar mass of…

Q: A patient is having an allergic reaction and takes a 50.0 mg tablet of the over‑the‑counter…

A: Given, Mass of diphenhydramine hydrochloride = 50.0mg. Moles of diphenhydramine hydrochloride can be…

Q: a sample of pure alumina hydrate was obtained from a bag of flame retardant. A 5.000g sample of the…

A: Given, Mass of sample = 5.000g. Final weight of sample after heating = 2.651g. The mass of water in…

Q: 2.3 (a) How many grams are there in one amu of a material? (b) Mole, in the context of this book, is…

A: A.M.U is defined as mass of One atom.

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: A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. The…

A: Given:Mass of CO2 = 167 mg.Mass of H2O = 34.2 mg.Molar mass of CO2 = 44 g/mol.Molar mass of H2O = 18…

Q: The combustion of liquid propane (C3H8) yields gaseous carbon dioxide and water vapor.  If 2.33…

A:

Q: A) Chlorophyll molecules are responsible for the green pigmentation of plants. Differing chemically…

A: Given that : 1 molecule of chlorophyll X contains 4 N atoms. % nitrogen by weight = 6.26 %

Q: 1. The number of ammonia (NH3) molecules present in 4.85 grams of NH3 is: 2.…

A:

Q: Caffeine has the formula C8H10N4O2 . If an average cup of coffee contains approximately 125 mg of…

A: In the international system of units the mole (symbol: mol) is the quantity unit for measurement…

Q: In an experiment, 2.7g of compound C yielded 1.48g of C6H5CH2OCH2C6H5. What is the percentage yield?…

A:

Q: What is the empirical formula of a compound with the following composition: 24.78% C, 1.05% H, and…

A: Empirical formula can be calculated by these steps dividing mass percent with molar mass to get…

Q: The average nicotine (C10H14N2) content of a Camel cigarette is 1.93 mg. Suppose an individual…

A:

Q: A chloride of silicon contains 79.1 mass % Cl. (a) What is theempirical formula of the chloride? (b)…

A: Empirical formula It gives the simplest whole number ratio of elements present in a compound. It is…

Q: b. a compound that is 63.5 % Ag, 8.2 % N, and 28.3 % O %3D 5. Aspartame is an artificial sweetener…

A: Determination of empirical formula from percent composition Calculate the number of moles of each…

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

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

Q: What are the masses of the four different BrCl molecules? Express the masses in atomic mass units…

A: Isotopes - Isotopes are two or more atoms having the same atomic number but different mass numbers.…

Q: how many molecules are there in 1×10^-4 mole of benzene C6H6?

A: Given that, Number of moles of benzene = 1.0×10-4 moles

Q: A patient is having an allergic reaction and takes a 12.5mg tablet of the over‑the‑counter…

A: The mass of the tablet is = 12.5 mg = 12.5 x 10-3 g The molecular formula of diphenhydramine…

Q: An elemental analysis of the acid indicates that it is composed of 5.89% H, 70.6 % C and 23.5% O by…

A:

Q: 2. How much (mass) carbon dioxide will be produced from the combustion of 40 grams of methane?. 3.…

A:

Q: A particular oral contraceptive contains 0.044 mg of ethinyl estradiol in each pill. The formula of…

A: Number of moles = given mass / molecular mass

Q: 3. How many moles of chlorine atoms are there in 10.000 moles of sodium chlorate? How many grams of…

A: Note: Providing solution for question 3 as asked. Given, moles of sodium chlorate (NaClO3) = 10.000…

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: 1. A prospector panning for gold in a river collects 15.00 g of pure gold. How many Au atoms are in…

A: According to mole concept, 1. 1 mole of a substance = molar mass of the substance.Eg- 1 mole ammonia…

Q: 3. a. If "Epsom salt", MgSO4. xH₂O, is heated to 250 ° C, all the water of hydration is lost. Write…

A: Epsom salt = MgSO4. xH2O xH2O is the water of crystallization attached physically to the salt.   a)…

Q: A sample of the male sex hormone testosterone, C19H28O2,contains 3.88 x 1021 hydrogen atoms. (a) How…

A: Atoms and molecules amount is calculated with the help of mole concept. A mole is defined as amount…

Q: 2. How many molecules are there in 2.54 moles of glucose, C,H1,O6?

A: We know that in one mole of any substance = 6.022×10²³ unit So one mole of glucose = 6.022 × 10²³ So…

Q: Capsaicin, the compound that gives the lhot taste to chili peppers, has the formula C18H27NO3.(a)…

A: Given:

Q: A patient is having an allergic reaction and takes a 50.050.0 mg tablet of the over‑the‑counter…

A: Given : Mass of C17H22ClNO = 50.0 mg = 0.050 g                                                (Since…

Q: Batrachotoxin, C31H42N2O6, an active component of South American arrow poison, is so toxic that 0.05…

A: Given data : Mass of Batrachotoxin(C31H42N2O6) = 0.05 mg = 0.5 x 10-4 g Molar mass of Batrachotoxin…

Q: The molecular formula of aspartame, the artificial sweetenermarketed as NutraSweet®, is C14H18N2O5.…

A: Aspartame is an artificial sweetener that is 200 times sweeter than the sucrose is marketed as…

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

A: Answer

Q: Your doctor has diagnosed you as being anemic—that is, as having too little iron in your blood. At…

A: Answer:- This question is answered by using the simple concept of calculation number of atoms which…

Q: A sample of glucose, C6H12O6, contains 1.250 * 1021 carbonatoms. (a) How many atoms of hydrogen does…

A: 1 molecule of glucose contains 6 atoms of C, 12 atoms of H and 6 atoms of O.  Molar mass of glucose…

Q: What is the molar mass of nitroglycerin, C3HS(NO3)3?

A: Molar mass of a compound is equal to the sum of atomic masses of all the elements in that compound.…

Q: A patient is having an allergic reaction and takes a 25.0 mg tablet of the over‑the‑counter…

A: Given that, a patient has an allergic reaction and takes a 25.0 mg tablet of an antihistamine…

Q: 4. How many molecules are in 2.5 mole H,O?

A: Any  1 mol of substance  always contains avogadro number of molecules.

Q: When 6.65 g of hydrate NiSO4•XH₂O was heated and the water was driven off and 3.67 g of anhydrous…

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.