Complete the table below for calculating the molar mass of the compound sulfur hexafluoride . Formula =     ... Molar Mass ... Moles ... Mass in Compound S  g/mol ×  mol =  g F  g/mol ×  mol =  g molar mass sulfur hexafluoride =  g/mol

hat is the difference between the empirical and molecular for mulas of a compound? Can they ever be the same? Explain.

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

How many objects are in 1 mol? What is the common name for this number of objects?

Complete the following table. l> Mass of Sample Moles of Sample Molecules in Sample Atoms in Sample 4.24 g msp;C6H6 0.224 mol msp;H2O msp;2.711022 molecules msp;CO2 1.26 mol HCl td> msp;2.211024 molecules msp;H2O 0.297 g msp;CH3OH

n chemistry, what is meant by the term mole? What is the importance of the mole concept?

Atomic masses are relative masses. What does this mean?

Suppose Avogadro’s number was 1000 instead of 6.0221023 . How, if at all, would this affect the relative masses on the periodic table? How, if at all, would this affect the absolute masses of the elements?

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?

A compound was analyzed and found to contain the following percentages of elements by mass: carbon, 79.89%; hydrogen, 20.11%. l type='a'> Determine the empirical formula of the compound. i>Which of the following could be a molar mass of the compound? 13.018 g/mol 16.042g/mol 28.052 g/mol 30.068 g/mol 104.23 g/rnol