7 For the molecular compound tetraphosphorus decaoxide, what wouldyou multiply "molecules of P4010" by to get the units "gramsof P,010"?molecules P4010g P4010Drag and drop your selection from the following list to complete theanswer:1 molecule P40106.02 x 1023 moles P4O101 mole P40101 gram P4010283.88 gramsP40106.02 × 1023 molecules P4O106.02 ×1023gramsPĄO10283.88 moles P4O10283.88 molecules P4010

Answered: Image /qna-images/answer/a7c68e5c-b85d-41c8-9314-39b9368b2628.jpg

Answered: For the molecular compound…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter3: Equation, The Mole, And Chemical Formulas

Section: Chapter Questions

Problem 3.76QE

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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?
Determine the number of moles in each substance. a. 3.251020 atoms of lead b. 4.961024 molecules ofglucose c. 1.561023 formula units of sodium hydroxide d. 1.251025 copper(II) ions
hat is the difference between the empirical and molecular for mulas of a compound? Can they ever be the same? Explain.
Suppose that the atomic mass of C-12 is taken to be 5.000 amu and that a mole is defined as the number of atoms in 5.000 kg of carbon-12. How many atoms would there be in one mole under these conditions? (Hint: There are 6.0221023 C atoms in 12.00 g of C-12.)
One chocolate chip used in making chocolate chip cookies has a mass of 0.324 g. (a) How many chocolate chips are there in one mole of chocolate chips? (b) If a cookie needs IS chocolate chips, how many cookies can one make with a billionth (1109) of a mole of chocolate chips? (A billionth of a mole is scientifically known as a nanomole.)
Using the average atomic masses given inside the front cover of this hook, calculate the mass in grains of each of the following samples. l type='a'> 0.341 mole of potassium nitride 2.62 mmol of neon (1 mmol = 1/1000 mol) 0.00449 mole of manganese(II) oxide 7.18105moles of silicon dioxide 0.00021 mole of iron(III) phosphate
Calculate the number of moles of carbon atoms present in eachof the following samples. l type="a"> 1.271 g of ethanol, C2H5OH i>3.982 g of 1 ,4-dichlorobenzene, C6H4Cl2 i>0.4438 g of carbon suboxide, C3O2 i>2.9 10 g of methylene chloride, CH2Cl2
Calculate the percent by mass of the element listed first in the formulas for each of the following compounds. methane, CH4 sodium nitrate, NaNO3 carbon monoxide, CO nitrogen dioxide, NO2 1-octanol, C8H18O calcium phosphate, Ca3( PO4)2 3-phenyiphenol, C12H10O aluminum acetate, Al(C2H3O2)3
Using the average atomic masses given inside the front cover of this book, calculate the mass in grams of each of the following samples. l type='a'> 2.17 moles ot germanium, Ge 4.24 mmcl of Iead(II) chloride (1 mmol = 1/1000 moI) 0.0971 mole of ammonia, NH3 :math>4.26103moles of hexane, C6H14 i>1.71 moles of iodine monochloride, ICI
Calculate the number of molecules present in each of the following samples. l type="a"> 4.75 mmol of phosphine, PH3 i>4.75 g of phosphine, PH3 i>1.25102 g of lead(II) acetate, Pb( CH3 CO2)2 i>1.25 X 10 2 moles of lead(II) acetate, Pb( CH3 CO2)2 i>a sample of benzene, C6H6 , which contains a total of 5.40 moles of carbon
3.78 Consider two samples of liquid: I mole of water (H2O) and 1 mole of ethanol. Answer each of the following questions. Note that none of these should require significant calculations. (a) Which sample contains more atoms? (b) Which sample contains more molecules? (c) Which sample has a larger mass?
A dark brown binary compound contains oxygen and ametal. It is 13.38% oxygen by mass. Heating it moderatelydrives off some of the oxygen and gives a red binary compoundthat is 9.334% oxygen by mass. Strong heatingdrives off more oxygen and gives still another binary compound,which is only 7.168% oxygen by mass. (a) Compute the mass of oxygen that is combined with1.000 g of the metal in each of these three oxides. (b) Assume that the empirical formula of the first compoundis MO2 (where M representsthe metal). Givethe empirical formulas of the second and thirdcompounds. (c) Name the metal.

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