3.152 Myoglobin stores oxygen for metabolic processesin muscle. Chemical analysis shows that it contains0.34 percent Fe by mass. What is the molar mass ofmyoglobin? (There is one Fe atom per molecule.)

Q: the insecticide DDD contains only c,h, and cl. When 3.2 g is combusted, 6.162 g of Co2 and 0.9008 g…

A: Given : DDD contains only C, H and Cl atoms. Mass of DDD combusted = 3.2 g Mass of CO2 produced on…

Q: Iron ore is impure, Fe2O3. When Fe2O3 is heated with an excess of carbon (coke), metallic iron and…

A:

Q: Epsom salts, a strong laxative used in veterinary medicine,is a hydrate, which means that a certain…

A: A compound which has definite amount of water is present in the form of H2O molecule, is called…

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

A:

Q: Acetylene gas is 92.3% carbon and 7.7% hydrogen (by mass), and its miler mass is 26 g/mol. What is…

A: A numerical problem based on molecular formula determination, which is to be accomplished.

Q: A chemist requires 0.422 mol Na2CO3 for a reaction. How many grams does this correspond to?

A:

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

A:

Q: One molecule of the antibiotic penicillin G has a mass of 5.342 * 10-21 g. What is the molar mass of…

A: Molar mass is mass of one mole of substance. And 1mole = 6.023*10^23 molecules

Q: Consider the chemical equation: CO + Fe2O3 → Fe + CO2. How many grams of iron can be produced given…

A: Given that Number of moles of CO = 12.0 molNumber of moles of Fe2O3 = 12.0 mol Balance the given…

Q: A large electronics company is creating and testing SiC for use in new computer chips. A chemical…

A: the mass of SiC created is 29.4 g.

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: Hydrogen gas is considered a clean fuel because it produces only water vapor when it burns. If the…

A: Combustion reaction of hydrogen gas is  H2 + 12 O2 → H2O   Given that , mass of water (H2O) formed =…

Q: The compound butyric acid gives rancid butter its characteristics odor. A). What is the molecular…

A: Hey, since there are multiple sub parts questions posted, we will answer first three questions. If…

Q: A fuel tank used in a barbecue contains 9.8 gr. of total atoms of propane, C3H8(g)- a. What amount…

A: Because propane is made up only of carbon and hydrogen , the chemical formula is C3H8 . It's an…

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: Because of increasing evidence of damage to the ozone layer, chlorofluorocarbon (CFC) production was…

A: Given : Number of automobiles = 100 million = 100 X 106                                  (since 1…

Q: Cyanogen, (CN)₂, has been observed in the atmosphere of Titan, Saturn’s largest moon, and in the…

A: From the law of conservation of mass, the mass of reactants and products are equal in a chemical…

Q: Sulfur dioxide is a major industrial gas used primarily forthe production of sulfuric acid, but also…

A: The process of formation of SO2during the process is ,4FeS2(s) +11O2(g) →2Fe2O3(s) +8 SO2(g)It is…

Q: A pharmaceutical manufacturer found that a reaction that should yield 27.4 kilograms of an…

A:

Q: A 55-kg woman has 7.5 × 10−3 mol of hemoglobin (molar mass = 64,456 g/mol) in her blood. How many…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance. It is…

Q: The empirical formula for trichloroisocyanuric acid, the active ingredient in many household…

A: Empirical formula : Simplest whole number ratio of a compound is called empirical formula…

Q: .sunscreen preparation contains 2.70 % by mass benzyl salicylate. If a tube contains 4.0 oz of…

A: The sunscreen contains = 2.70 % of benzyl salicylate The mass of sunscreen in one tube is = 4.0 oz…

Q: A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts…

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

Q: Progesterone, a female hormone, has the formula C21H30O2. In a 25.00 g sample of this compound, a.…

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

A: Given,47.3 mg sample produced 128 mg of CO2 and 26.3 mg of H2OMolar mass of carbon = 12.0107Molar…

Q: Ammonium phosphate ((NH4),PO4) is an important ingredient in many fertilizers. It can be made by…

A: To calculate the mass of ammonium phosphate produced by reaction of given mass of ammonia , we would…

Q: The depletion of ozone (O3) in the stratosphere has been a matter of great concern among scientists…

A: 1 mol of NO (g) reacts with 1 mol of O3 (g) to form 1 mole of NO2 (g) and O2 (g).

Q: Disulfide dichloride (S,Cl,) is used in the vulcanization of rubber, a process that prevents this…

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Q: Menthol, the substance we can smell in mentholated cough drops, is composed of C, H and O. A…

A: Given: Mass of sample = 0.1005 g Mass of CO2 = 0.2829 g. Mass of H2O = 0.1159 g. Molar mass of CO2 =…

Q: Suppose 2.60 g of chlorine, Cl2, are used to prepare dichlorine pentoxide, Cl2O5. How many moles of…

A: Ans. Dichlorine pentoxide formation: (a) moles of oxygen             2Cl2+5O2 → 2Cl2O5      (2…

Q: One of the first chemical WMDs, researchers initially produced VX nerve agent for retail sale in the…

A: we need to determine the empirical formula of the nerve agent

Q: The human body excretes nitrogen in the form of urea,NH₂CONH₂. The key biochemical step in urea…

A: Formula of Urea is NH2CONH2  molecular mass of urea = 60 amu Formula of Arginine is C6H14N4O2…

Q: (a) One molecule of the antibiotic penicillin G has a massof 5.342 * 10-21 g. What is the molar mass…

A: (a) Given information,     One molecule of the antibiotic penicillin G has a mass of 5.342 * 10-21…

Q: Magnesium oxide (MgO) forms when the metal burns in air.(a) If 1.25 g of MgO contains 0.754 g of Mg,…

A: Magnesium burns in air, which results in the formation of magnesium oxide. It is expressed in the…

Q: Taking 28,6 g of Na2CO3.xH2O, it is heated in a burner flame. After the heating process, the mass of…

A: The reaction when Na2CO3.xH2O is heated is as follows: Na2CO3.xH2O →Na2CO3+xH2O

Q: A sample of a compound decomposes into its elements A and B.  When the compound decomposes 7.75g of…

A: Given : Mass of B produced = 7.75 g Mass ratio of A and B = 3.60  And compound decomposes to A and…

Q: Phosphorous and sulfur form an extensive series of sulfides with the general formula PxSy. Determine…

A: Recall the measurements, %S=72.1 % Unknown = PxSy

Q: A 0.025-g sample of a compound composed of boron and hydrogen, with a molecular mass of ~28 amu,…

A: The empirical formula is the chemical formula of any compound that represents the proportions of…

Q: Because of increasing evidence of damage to the ozone layer, chlorofluorocarbon (CFC) production was…

A: Given : Mass of CFC in each automobile = 1.5 Kg  Number of automobiles = 100 million = 100 X 106 =…

Q: A compound M2O3 is 30.06% oxygen, where M is an unknown metal. The molar mass of M2O3 is?

A:

Q: Suppose that in the synthesis of isoamyl acetate, a student began with 6.209 grams of acetic acid…

A: The theoretical yield of the reaction is calculated as,

Q: The gemstone tanzanite was first discovered in Tanzania in 1967. Like other gemstones, it contains…

A:

Q: Prozac, CırHuFaNO, is a widely used antidepressant that inhibits the uptake of serotonin by the…

A: Since you have posted a question with multiple sub-parts, as per our company guidelines we are…

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: Methane and ethane are the two simplest hydrocarbons.What is the mass % C in a mixture that is 40.0%…

A: Hydrocarbons are defined as the organic chemical compounds that contain only carbon and hydrogen…

Q: C. An organic compound, in liquid form, comprises of 59.2% C, 13.6% H and and has a molar mass of 60…

A:

Q: The depletion of ozone (O3) in the stratosphere has been a matter of great concern among scientists…

A:

Q: A 41.54 gram sample of a hydrate of MnSO4 was heated thoroughly in a porcelain crucible, until its…

A: Given:The given sample is MnSO4 .Mass of sample before heating  = 41.54 gMass of sample after…

Q: A chemist requires 0.471 mol Na2CO3  for a reaction. How many grams does this correspond to?

A: Number of moles of a substance can be calculated by dividing the given mass of the substance by its…

Q: Valproic acid, used to treat seizures and bipolar disorder, iscomposed of C, H, and O. A 0.165-g…

A: a) We are given the mass of H2O=0.166 g and CO2=0.403 gNow the number of moles of CO2 and H2Omoles…

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.