Chemistry 1 Chapter 6 Molar mass, Molar conversions and % Composition

In order to convert grams to moles, I use...

molar mass, (1 mole/ grams)

In order to convert moles to grams, I use...

molar mass, (grams/ 1 mole)

What is the percentage composition of CF₄?

13.6% C, 86.4% F

calculate the molar mass of copper(II) sulfate, CuSO₄

159.62 moles/grams

What is the percentage composition of CuCl₂?

47.27% Cu, 52.73% Cl

1 mole of any element has __________atoms

6.02 X 10 ^23

1 mole of gold has _____________ atoms

6.02 X 10 ^23

1 mole of silver has_____________ atoms

6.02 X 10 ^23

1 mole of water contains how many molecules?

6.02 X 10 ^23 MOLECULES, not atoms

What is the molar mass of magnesium chloride, MgCl₂? Mg =24.3 g, Cl = 35.4 g

95.21 grams

the molar mass of an element

atomic mass in grams/mole

The molar mass of Magnesium Iodide, MgI₂, is...

1 x 24+ 2x127= 278 grams/ 1 mole

In order to convert moles to atoms (or molecules), I use...

Avogadro's number: 6.02 X 10 ^23 atoms/ 1 mole

molar mass of a molecule

Take the subscript of an element and multiply by the atomic mass of each element in the compound, then add them together.