Molar Mass. \ Molar Mass The mass of 1 mole of an element or compound Units: g (grams) Molar mass = atomic mass Atomic mass of each element.

Molar Mass

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Molar Mass

The mass of 1 mole of an element or compound

Units: g (grams)

Molar mass = atomic mass

Atomic mass of each element is in RED (units are amu)

Round to the nearest hundredth!!

For an Element

Take the element Carbon (C) Molar mass = 12.01g 1 mol of C = 12.01g

How about Boron (B)? Molar mass =

For a Compound

Take the compound NO Molar mass of the compound = sum of the molar

mass of each element 14.01 + 16.00 = 30.01g 1 mole of NO = 30.01g

How about CO2

Molar mass =

What is the molar mass of:

NaOH K2CrO4 Mg3(PO4)2

Example 12

Calculate the mass in grams of 0.0450 moles of chromium (Cr).

Example 14

What is the mass of 2.50 moles of CH4?

Example 16

Determine the number of moles in 35.5g of silver (Ag).

Example 18

Calculate the number of moles of 325g of Ca(OH)2

Example 20

How many atoms are in 63.2g of beryllium (Be)?

Example 21

How many formula units (f.u.) are in 124g of mercury(II) chloride (HgCl2)?

Example 22

What is the mass in grams of 3.15x1024 atoms of silver (Ag)?

Example 23

What is the mass in grams of 1.50x1015 molecules of silver dioxide (SO2)?