3. The average atomic mass of an atom is expressed ina. gramsc. g/molb. amud. moles4. Which statement is correct?a. 4 g of CH4 is equal to 4 moles of CH4b. 4 g of CH4 is equal to 1 mole of CH4C. 4 moles of CH4 is equal to 16 g of CH4d. 4 moles of CH4 is equal to 64 g of CH45. Which statement is NOT true?a. One mole of a substance contains a fixed number of particles.b. One mole each of different substances have different masses and differentnumber of particles.c. One mole each of different substances have the same number of particles butthey have different masses.d. The formula mass of the compound is equal to one mole of that substance.

The answer to the given question is as follows------------- The number of moles (n) = Mass (W)/Molar…

Answered: 3. The average atomic mass of an atom…

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter33: Preparation Of Copper(i) Chloride

Section: Chapter Questions

Problem 5ASA

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When elemental carbon is burned in the open atmosphere, with plenty of oxygen gas present, the product is carbon dioxide. :math>C(s)+O2(g)CO2(g) wever, when the amount of oxygen present during the burning of the carbon is restricted, carbon monoxide is more likely to result. :math>2C(s)+O2(g)CO(g) at mass of each product is expected when a 5.00-g sample of pure carbon is burned under each of these conditions?
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itamin B12 , cyancobalamin, is essential for human nutrition. Its molecular formula is C63H88CoN14O14P . A lack of this vita min in the diet can lead to anemia. Cyanocohalamin is the form of the vitamin found in vitamin supplements. l type='a'> What is the molar mass of cyanocobalamin to two decimal places? How many moles of cyanocohalamin molecules are present in 250 mg of cyanocobalamin? What is the mass of 0.60 mole of cyanocobalamin? How many atoms of hydrogen are in 1 .0 mole of cyanocobalamin? What is the mass of 1.0107 molecules of cyanocobalamin? What is the mass (in grams) of one molecule of cyanocobalamin?
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DDT, an insecticide harmful to fish, birds, and humans, is produced by the following reaction: In a government lab, 1142 g of chlorobenzene is reacted with 485 g of chloral. a. What mass of DDT is formed, assuming 100% yield? b. Which reactant is limiting? Which is in excess? c. What mass of the excess reactant is left over? d. If the actual yield of DDT is 200.0 g, what is the percent yield?
Determine the formula for hydrate of CuSO4 mass of crucible = 12.73g mass of crucible with hydrate = 24.11g mass after heating = 20.01 Find the following Mass of hydrate ? Mass of crucible and anhydrous CuSO4? Mass of anhydrous CUSO4 ? Mass of water in hydrated CuSO4 ? Mole of anhydrousCuSO4 and water in hydrated CuSO4 Ratio of moles of water to moles of anhydrousCuSO4 Use your data to calculate the formula for hydrated CuSO4 https://www.youtube.com/watch?v=OuF4hjTFdsg This is the link if you think that is no enough data
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A sample of a compund made entirely from copper and oxygen was founf to have a total mass of 0.1431g. The mass of the copper om the compound eas found to be 0.1271g.1) Calculate the mas of oxygen in the sample. 2) Calculate the number of moles of oxygen in the sample. 3) Use the mole ratio of copper to oxygen rounded off to the nearest whole nmber to determine both the formula and the molar mass of the compound.

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