How many grams are in 1 mole?

The molar mass is equal to the amount of grams in 1 mole of an item

How many particles are in 1 mole?

6.02*10^23 particles are in 1 mole

Which word are you looking for in the problem to tell if it is a 1 step or 2 step problem?

Mole. If mole is in the problem it is a 1 step problem and if it isn't in the problem it is a 2 step problem

When setting up a conversion factor which unit goes on the top and which unit goes on the bottom?

The wanted unit goes on the top and the given unit goes on the bottom.

Units should match in what direction?

Units should match diagonally in this direction.... \

Where would 1 mole go in the problem below: How many moles are in 2.5 g of water?

On the top of the conversion factor. It is a 1 step problem because the word moles is in the problem. 2.5g/1 * 1mol/18.02g

Set up the following problem: How many particles are in 3 g of hydrogen?

3 g/1 * 1mol/2.02 g * 6.02*10^23p/1mol

Honors only: What is the volume of 7 g of oxygen?

7 g/1 * 1mol/32.00 g * 22.4 L/1mol = 4.90 L Don't forget that oxygen is diatomic

How many grams are in 2.1*10^24 p of fluorine?

2.1*10^24p/1 * 1mol/6.02*10^23 * 38.00 g/1mol = 132.56 g Don't forget the fluorine is diatomic

How many grams are 6.2 moles of HCl? Molar mass of HCl is 36.46 if you need it.

6.2mol/1 * 36.46g/1mol = 226.05g Notice I gave you the molar mass in the question as a help. That doesn't mean you will always use it. You did need it this time.

How many particles are in 1.2 moles of HCl?

1.2mol/1 * 6.02*10^23/1mol = 7.22*10^23p Notice I gave you the molar mass in the question as a help. That doesn't mean you will always use it. This time you did not need to use it

How many grams are in a 3 M solution of HCl that was made using 1.5 L? Molar mass of HCl is 36.46g if you need it

3M * 1.5L = 4.50mol BUT remember, we need grams... so now we need a step mole conversion 4.50mol/1 * 36.46g/1mol = 164.07 g

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Topic 10 Moles

Question	Answer
Honors only: How many liters are in 1 mole?	22.4 L are in 1 mole
How many grams are in 1 mole?	The molar mass is equal to the amount of grams in 1 mole of an item
How many particles are in 1 mole?	6.02*10^23 particles are in 1 mole
What is the maximum number of steps a mole conversion problem can have?	2 steps
Which word are you looking for in the problem to tell if it is a 1 step or 2 step problem?	Mole. If mole is in the problem it is a 1 step problem and if it isn't in the problem it is a 2 step problem
When setting up a conversion factor which unit goes on the top and which unit goes on the bottom?	The wanted unit goes on the top and the given unit goes on the bottom.
Units should match in what direction?	Units should match diagonally in this direction.... \
Where would 1 mole go in the problem below: How many moles are in 2.5 g of water?	On the top of the conversion factor. It is a 1 step problem because the word moles is in the problem. 2.5g/1 * 1mol/18.02g
Set up the following problem: How many particles are in 3 g of hydrogen?	3 g/1 * 1mol/2.02 g * 6.02*10^23p/1mol
Honors only: What is the volume of 7 g of oxygen?	7 g/1 * 1mol/32.00 g * 22.4 L/1mol = 4.90 L Don't forget that oxygen is diatomic
How many grams are in 2.1*10^24 p of fluorine?	2.110^24p/1 1mol/6.0210^23 38.00 g/1mol = 132.56 g Don't forget the fluorine is diatomic
How many grams are 6.2 moles of HCl? Molar mass of HCl is 36.46 if you need it.	6.2mol/1 * 36.46g/1mol = 226.05g Notice I gave you the molar mass in the question as a help. That doesn't mean you will always use it. You did need it this time.
How many particles are in 1.2 moles of HCl?	1.2mol/1 * 6.0210^23/1mol = 7.2210^23p Notice I gave you the molar mass in the question as a help. That doesn't mean you will always use it. This time you did not need to use it
Draw your molarity circle. Cover what you are looking for. How would you calculate MOLES using the circle	M * L
Draw your molarity circle. Cover what you are looking for. How would you calculate LITERS using the circle	mol / M
What would the molarity be of a solution that was 2.25 L and contained 17.5 moles?	17.5 mol/ 2.25 L = 7.78 M
How many grams are in a 3 M solution of HCl that was made using 1.5 L? Molar mass of HCl is 36.46g if you need it	3M * 1.5L = 4.50mol BUT remember, we need grams... so now we need a step mole conversion 4.50mol/1 * 36.46g/1mol = 164.07 g

Created by: erika.johnson

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