3.121 Avogadro’s number has sometimes been described as aconversion factor between amu and grams. Use thefluorine atom (19.00 amu) as an example to show therelationship between the atomic mass unit and the gram.

Q: Each molecule of vitamin B12 contains a single atom of cobalt and is 4.35% cobalt by mass. What is…

A:

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: One of the hydrates of NazCr0, is sodium chromate decahydrate. A 56.6 gram sample of NazCr04 10 H,O…

A:

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: One of the hydrates of Na2CO3 is sodium carbonate decahydrate A 55.6 gram sample of Na2CO3  10 H2O…

A: b b

Q: Spodumene is processed chemically to convert it to a material having the percent composition 18.79%…

A: The given mass percentage are: Li=18.79 % C=16.25 % O=64.96 % The empirical formula has to be…

Q: Which of the following has more atoms: 0.302 g ofhydrogen atoms or 14.7 g of chromium atoms?

A: If the number of moles of a substance are more, the number of atoms are also more. Number of moles…

Q: The formula for rust can be represented by Fe,O3. How many moles of Fe are present in 21.6 g of the…

A:

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: Propane, C3H8, is a hydrocarbon gas. It is abundant in Canada and is a common fuel used for heating…

A: Propane is an organic compound which is made up of hydrogen and carbon atoms. The molecular formula…

Q: In 1871, Mendeleev predicted the undiscovered element ekasilicon. In 1886, the element was…

A:

Q: g figs 6. How many moles of calcium chloride are in 2.25 x 10 molecules of calcium chloride?

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: White phosphorus, P4, spontaneously bursts into flame in oxygen. If 6.500 g of white phosphorus…

A: Answer: Empirical formula of the compound is the formula that represents the atoms of each type…

Q: 3.111 A sample of a compound of Cl and O reacts with anexcess of H2 to give 0.233 g of HCl and 0.403…

A: The empirical formula of the compound has to be given, Solution: The molar mass of HCl is…

Q: Beryllium is a light metal used to fabricate transparent X-ray windows for medical imaging…

A: Number of moles of any substance can be calculated by dividing mass of that substance with its molar…

Q: Calculate the mass in grams of 3.07×10243.07×1024 molecules of propane. The chemical formula for…

A: Given that : The number of molecules of propane = 3.07×1024 The chemical formula for propane is…

Q: Uranium is used as a fuel, primarily in the form of uranium(IV) oxide, in nuclear power plants. A…

A: To solve this problem first we have to calculate the mass of oxygen combined , then we will…

Q: Acetylsalicylic acid, which is C9H8O4, is more commonly known as the active ingredient in Aspirin.…

A: Molar mass- The mass of one mole of a substance in grams is called molar mass. The numerical value…

Q: Claculate the moles of chlorine atoms in 0.0615 grams of 1,2- dichloroethane C2H4CL2.

A: The formula for the calculation of number of moles is as follows:

Q: The number of hydrogen atoms in a mole is Avogadro’s number, 6.02 * 1023. If one mole of the gas has…

A: This problem can be solved by knowing that one mole of substance consists of 6.022×1023 atoms.

Q: A mass of 0.54 grams of phosphorus reacts with elemental chlorine to form 3.6 grams of a binary…

A: Mass of phosphorus = 0.54 g Mass of PxCly = 3.6 g

Q: Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means…

A:

Q: A sample of 7.2 moles of the ionic compound, potassium dichromate, K2Cr2O7, is present. How many K+…

A: Applying concept of avogadro number. 1 mole = 6.022× 1023 atom/ molecules/ ions

Q: Phosphoric acid can be prepared by reaction of sulfuric acid with "phosphate rock" according to the…

A: Given mass of Ca3(PO4)2 is 2.5E-9

Q: How many atoms of silicon are in 0.75 mol of disilicon hexahydride, Si2H6?

A: Moles of Si2H6 = 0.75 mol No. of atoms of Si in Si2H6 = ?

Q: Minerals in soils and soil amendments (e.g., fertilizers) are described by formula units that…

A: To calculate: What is the mass in grams of 0.518 moles of calcium carbonate (CaCO3)?

Q: A compound was decomposed and determined to be 51.27 % C, 7.75% H and 40.98 %O  by mass.  What is…

A: Given  C%   = 51.27 % H     = 7.75 %  O     = 40.98 %  Subscript of Carbon in Empirical Formula   =…

Q: How many moles is 2.45e24 molecules of Oswegium pantheride?

A: 1 mol of any substance contains 6.023 × 1023 number of molecules

Q: When Oxygen is bubbled through a solution of sodium polysulfide, photographic hypo is produced. If…

A: answer is option a

Q: Vitamin B12, cyanocobalamin, is essential for human nutrition. Its molecular formula is…

A: Cyanocobalamin is vitamin B12 with molar mass of 1355.38 g/mol

Q: The following diagram represents the collection of CO2 andH2O molecules formed by complete…

A: Combustion of hydrocarbon means heating a hydrocarbon in the presence of oxygen to give CO2 and H2O…

Q: How many moles of oxygen atoms are present in 0.350 moles of Na2CO3, a commonly used water softener?…

A: Na2CO3 is known as Sodium Carbonate.

Q: If you have 951.45 moles of Californium, how many atoms do you have? Avogadro's Number is…

A:

Q: Fungal laccase, a blue protein found in wood-rotting fungi, is 0.390% Cu by mass. If a fungal…

A: Lets assume we are having 1 mole of Fungal laccase , As per the question there should be 4 moles…

Q: 1.What is the percent composition by mass of aspartame (C14H18N2O5), the artificial sweetener…

A: Since you have asked multiple question ,I can solve only the first one as per our guidelines. To get…

Q: A hydrate of cobalt(II) chloride had a mass of 165.88 g before heating. After heating, the anhydrous…

A: Mass of CoCl2 before heating (hydrated) = 165.88 g Mass of CoCl2 after heating (anhydrous) = 130.9 g…

Q: b.How many moles of dinitrogen tetrafluoride are present in 3.16x 10^22 molecules of this compound?…

A: Number of moles= 5.45×10-2 moles

Q: How many moles of N204 are in 76.39 N204? The molar mass of Na04'is 92.02gimol".

A:

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: How many moles of H2SO4 do you have if there are 1.64 multiplied by 10E12 molecules of H2SO4

A:

Q: Thyroxine is a hormone secreted by the thyroid gland and has a formula of C15H11NO4I4. How many…

A:

Q: What is the molecular mass of chloroform if 0.0275 mol weighs 3.28 g?

A: Given: Number of moles = 0.0275 mol mass of chloroform=3.28g To find: The molecular mass of the…

Q: Dichlorine heptoxide (Cl2O7) is a highly reactive compound used in some organic synthesis reactions.…

A:

Q: Anabolic steroids are performance enhancement drugs whose use has been banned from most major…

A: Calculate the molar mass of fluoxymesterone (C20H29FO3),      20(12.01) + 29(1.01) + 1 (19.00) + 3…

Q: The percentage composition by mass (to the nearest 0.1) of C in sugar, C8H10O7, is ______________.

A: The ratio of mass of particular atom to the total mass multiply by 100 is known as percentage by…

Q: Aspirin is a compound with the molecular formula C9H8O4. What is its percent composition?

A: The percentage composition of C in aspirin can be calculated as: Percent composition of C = Number…

Q: The formula for rust can be represented by Fe2O3. How many moles of Fe are present in 27.9g of the…

A: Each mole of Fe2O3 contains two moles of Fe atom therefore, total number of moles of Fe present in…

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.