Molecular Formulae: The Next Step

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# Molecular Formulae: The Next Step - PowerPoint PPT Presentation

Molecular Formulae: The Next Step. What is the empirical formula of:. C 6 H 9 N 3. ratio = __________. C 2 H 3 N. What are the molar masses of the molecular and empirical formulae? . C 6 H 9 N 3 = 123.18 g/ mol. ratio = _______. C 2 H 3 N = 41.06 g/ mol.

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Molecular Formulae: The Next Step

What is the empirical formula of:

C6H9N3

ratio = __________

C2H3N

What are the molar masses of the molecular and empirical formulae?

C6H9N3 = 123.18 g/mol

ratio = _______

C2H3N = 41.06 g/mol

Molecular Formulae: The Next Step

________________________________________________ ________________________________________________ ________________________________________________

If a compound has a molar mass of 78.1150 g/mol and an empirical formula of CH, what is the molecular formula?

empirical mass = _____________

mass ratio = _________

formula ratio = ___________

molecular formula = __________

Molecular Formulae: The Next Step

Caffeine is my life blood! Give the empirical and molecular formulae based on: 40.09g C, 4.172g H, 23.41g N, and 13.37g O. The molar mass of caffeine is 194.19 g/mol

Molecular Formulae: The Next Step

Caffeine is my life blood! Give the empirical and molecular formulae based on: 40.09g C, 4.172g H, 23.41g N, and 13.37g O. The molar mass of caffeine is 194.19 g/mol

________ = _________

mass ratio = _________

formula ratio = ________

molecular formula = ____________

Molecular Formulae: The Next Step

Give the empirical and molecular formulae for a compound based on: 6.85g C, 0.432g H, 3.41g O, and 11.4g Br. The molar mass of the compound is 929.88 g/mol

Molecular Formulae: The Next Step

Give the empirical and molecular formulae for a compound based on: 6.85g C, 0.432g H, 3.41g O, and 11.4g Br. The molar mass of the compound is 929.88 g/mol

___________ = ___________

mass ratio = _________

formula ratio = ________

molecular formula = ______________

The mole

81.534 grams of water is equivalent to how many moles of water?

The mole

Only 2 options of what to do with the mole:

mole

mole

The mole

Only 3 options of what to do with the mole:

2 places to find a mole-to-mole ratio:

The mole

Only 2 options of what to do with the mole:

The mole

Only 2 options of what to do with the mole:

mole

particles

molar mass

mole

mass

mole-to-mole ratio

mole “X”

mole “Y”

The mole

How many ATOMS of nitrogen are in 6.119 moles of ammonium sulfide?

_______________________________________

_______________________________________

_______________________________________

_______________________________________

Step 1: ___________________________________

Step 2: ___________________________________

Step 3: ___________________________________

A sample of aluminum bicarbonate contains 1.75 grams of carbon, how many molecules of aluminum bicarbonate are present?