Caffeine,a stimulant found in coffee,tea and chocolate,contains 49.48% carbon,5.15% hydrogen,28.87% nitrogen,and 16.49% oxygen by mass and has a molar mass of 194.2g/mol.Determine the molecular formula of caffeine.

Q: Compound X has a molar mass of 153.05·gmol−1 and the following composition: element…

A: We have given that Element mass % carbon 47.09% hydrogen 6.59% chlorine 46.33%…

Q: A compound has a percent composition of 24.74% potassium (molar mass = 39.10 g/mol), 34.76%…

A:

Q: Calculate the molar mass of adrenaline (C9H13NO3), a hormone responsible for regulating heart rate…

A: Since molar mass of any compound is given by  Molar mass = sum of ( Atomic mass of atoms X number of…

Q: 6.15×1023 KK atoms Express your answer using three significant figures.    How many moles of atoms…

A: We know 1mole = 6.022x1023  So we can easily find the number of moles by using- Number of…

Q: Calculate the mass in grams of 1 glucose molecule ( C6H12O6)

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Q: Combustion of a hydrocarbon in a limited supply of air produces COCO in addition to CO2CO2 and…

A: You don't provide the amount of water. But based on my experience put this value. If this value is…

Q: When 5.942 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 19.34 grams…

A: When organic compounds undergo combustion, they produce carbon dioxide and water. Chemical reactions…

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

A: Weight of the hydrated aluminum oxide (Al2O3 . xH2O) = 5.000 g Weight of the anhydrous alumina (when…

Q: A 8.648 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis…

A: 8.648 gram sample of an organic compound containing C, H and O   18.63 grams of CO2 Number of moles…

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: Coniine, a substance isolated from poison hemlock, contains only carbon, hydrogen, and nitrogen.…

A:

Q: Menthol is a flavoring agent extracted from peppermint oil. It contains C, H, and O. In one…

A: no of moles=mass/molar mass General Empirical formula  Cx H 2x Oy

Q: When 3.232 grams of a hydrocarbon, C,Hy, were burned in a combustion analysis apparatus, 11.10 grams…

A: Data given: Mass of sample = 3.232 g Mass of CO2 = 11.10 g Mass of H2O = 1.818 g Molar mass of the…

Q: Phosphorus pentachloride, PCIs, a white solid that has a pungent, unpleasant odor, is used as a…

A: mole is equal to weight of substance divide by it's molar mass

Q: When 4.673 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 16.05 grams…

A: Given: Mass of compound burned = 4.673 g. Mass of CO2 produced = 16.05 g. Mass of H2O produced =…

Q: Compound: CH₁₂ ELEMENT ATOMIC MASS X X X X # of ATOMS MOLAR MASS: SUB TOTAL % COMPOSITION

A: Dear student since you have posted multiple questions we will solve only first question for you if…

Q: What amount (moles) is represented by each of these samples? 32.2 mg caffeine, CaH10N4O2 Amount =…

A: Given:  1) mass of caffeine= 32.2 mg = 32.2 × 10-3 g = 0.032 g  2) molecules of ethanol= 4.58 × 1021…

Q: Convert 3.21 x 1021 grams of X5Z, into molecules/formula units of the same compound. (Assume that…

A: Molar mass of X  = 47.56 g/mol Molar mass of Z = 22.9 g/mol First, calculate Number of moles of X5Z6…

Q: A compound has an empirical formula of C2H4O and a molar mass of 88.g/mole. What is the molecular…

A:

Q: (Mass of crucible is 24.98g. The mass of the cover is 11.36g. The mass of the crucible, cover, and…

A: The mass % is equal to the ratio of the mass of the substance to the total mass multiplied by 100.…

Q: Compound X has a molar mass of 176.12·gmol−1 and the following composition: element mass % carbon…

A:

Q: Nitric acid is used in the production of fertilizer as well as nitroglycerin.  Convert 2.9 x 1021…

A: Since, we know that ; 1 mol of nitric acid contains 6.022 × 1023 molecules. So,  2.9 × 1021…

Q: 2) The molecular formula of allicin, the compound responsible for the characteristic smell of…

A: The molecular formula of allicin is C6H10OS2.

Q: A 3.782 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis…

A:

Q: has a molar mass of 86.09·gmol−1 and the following composition: element mass % carbon 55.81%…

A: Introduction : Empirical Formula : An empirical formula represents the simplest whole number ratios…

Q: When 4.464 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 14.01 grams…

A:

Q: Ammonium perchlorate NH4ClO4 is the solid rocket fuel that was used by the U.S. Space Shuttle and is…

A: The objective of this question is to determine the mass of water produced by the reaction of 6.89g…

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Q: Write the balanced equation:  White phosphorus, P4, burns in air to form a compound with a mass…

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Q: Alcoholic fermentation converts glucose (C6H12O6) into ethanol (C2H5OH) and carbon dioxide (CO2).…

A: Alcoholic fermentation of Glucose gives Ethanol and Carbon dioxide. It can be written in chemical…

Q: When aluminum metal is placed into hydrochloric acid (HCl), aluminum chloride and hydrogen gas are…

A: Here we are required to find the mass of HCl needed to produce 2.02gm of hydrogen gas

Q: A given sample of Xenon flouride compound contains molecules of the same type XeFn where n is some…

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Q: Calculate the mass of 3.62 x 1024 molecules of Vitamin A which has a molar mass of 180g/mole. O 1.08…

A: Given,the number of molecules of vitamin A =3.62×1024 moleculesmolar mass of vitamin A =180 gmolwe…

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: Caffeine, an extremely popular chemical amongst students and teachers alike, is composed of four…

A: Given, carbon  49.48 % hydrogen  5.19 % nitrogen 28.85 % oxygen  16.48 %

Q: 5 g of hydrated barium chloride is heated in a crucible until the mass of the sample no longer…

A: Given: Mass of hydrated barium chloride = 5 g Mass of sample after heating = 4.26 g The loss of mass…

Q: 6. A mixture weighing 6.200 grams is 28.0% silicon dioxide or sand, SiO2, 36.0% sodium chloride, or…

A: Since the mixture is having silicon dioxide, sodium chloride and baking soda only  Hence the sum of…

Q: s 7.86 g CO2 and 2.14 g H20. Calculate the empirical formula and molecular ula of acid given that…

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Q: A 3.06 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion…

A: Empirical formula: Formula containing atoms in smallest possible integer ratio Molecular formula:…

Q: A salt water mixture was prepared by dissolving 6.98 g of NaCl in 96.1 g of water. What is the…

A: The mass percentage of a component in a given solution is defined as the mass of the component per…

Q: When 5.974 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 18.74 grams…

A:

Q: What is the mass, in grams, of 6.5 x 10-3 moles of ammonium phosphate? 1.35 g 0.97 g 0.85 g 0.73 g

A: Concept:  Moles and molar mass can be used to predict the mass of the sample. Moles is unit to have…

Q: data from experiments to find the molecular formula of benzocaine, a local anesthetic, which…

A: In the given question we have to calculate the molecular formula of benzocaine. First of all we have…

Q: Compound X has a molar mass of 134.12·gmol−1 and the following composition: element mass % carbon…

A:

Q: 2HCN9) + 6H,0 (9) 302(9) 4. How many Liters of HCN gas can form from the reaction of 1.56 x 106…

A: The limiting reagent of a reaction is the compound that is consumed completely in the reaction. It…

Q: A beaker holds 4 x10^23 molecules of H2O. How many moles of H2O are in the beaker? Round to the…

A: The provided molecules of H2O=4×1023 molecules According to the Avagadro one mole of any substance…

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.