1. How many MOLECULES of sulfur tetrafluoride arepresent in 1.23 moles of this compound ?molecules.2. How many MOLES of sulfur tetrafluoride are presentin 8.05×1021 molecules of this compound ?| moles.Submit AnswerTry Another Version9 item attempts remaining

1. We have to calculate the number of molecules. 2. We have to calculate the number of moles.

Answered: 1. How many MOLECULES of sulfur…

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

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Chapter2: Atoms And Molecules

Section: Chapter Questions

Problem 2.91E

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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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Consider two samples of liquid: 1 mole of water (H2O) and 1 mole of ethanol (C2H50H). Answer each of the following questions. Note that none of these should require significant calculations. (a) sample contains more atoms? (b) Which sample contains more molecules? (c) Which sample has a larger mass?
1. Define Avogadro's number? explain w/ applications 2. What is a mole? 3. How are Avogadro's number and mole related, for element and/or compound?
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Results table. To clean up, zoom out from the balance and drag the sample to the red disposal container. Repeat with ammonium chloride (NH4Cl), located on the Salts shelf. C12H22O11 NH4ClMass (g) 1.0481 g 1.0444g Molar Mass (g/mol)MolesMoles of each elementAtoms of each element Much like the previous calculation, you will use the periodic table to determine the molar massof the compound. The example shown is for sodium chloride, NaCl. The molar mass is the massof 1 sodium (22.98g/mole) and 1 chlorine (35.45g/mole) added together, 58.43g/mole. If theformula shows multiple atoms, as in sugar, you must take that into account. For sugar, it will be12 times the mass of a carbon atom plus 22 time the mass of hydrogen atom, plus 11 times themass of oxygen atoms.The calculation of moles will be similar to that done in the previous…
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1. How many MOLECULES of sulfur tetrafluoride are present in 1.23 moles of this compound ? |molecules. 2. How many MOLES of sulfur tetrafluoride are present in 8.05×1021 molecules of this compound ? moles.