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Atoms
Moles
Grams
Molarity
Miscellaneous
100
1 mole is equal to how many atoms or molecules?

6.02 x 1023

100
What is the mass (g) of 1.00 mol Li?
6.94 g Li
100
How many moles in 2.65 g Fe?
0.0474 mol Fe
100

how many moles are needed to make a 3M solution using 1L of water?

3M x 1L = 3 moles

100

How many items are in a mole?

6.02 x 10^23 items

200

How many moles in 3.011 x 1023 atoms Mg?

0.5 mol Mg

200

How many atoms in 6.755 mol Pb?

6.755 x 6.02x1023

40.68 x 1023 atoms Pb

4.068 x 1024 atoms Pb

200
How many grams in 6.50 moles Cu
413 g Cu
200

How many moles of a chemical are needed to make a 2M solution in 500ml of water?

convert 500ml to L = 0.5L

2M x 0.5L

= 1 mole

200
How is the mass in grams of the element converted to number of atoms?
Divided by molar mass, then multiply by Avogadro's Number
300

12.04 x 1023 atoms is how many moles? 

2 moles

300

How many moles in 0.00750 g Ag? (in scientific notation)

6.95 x 10-5 mol Ag

300
How many moles are in 0.535 g Zn?
0.00818 mol Zn
300

How many moles of a chemical are needed to make a 0.2M solution in 20ml of water?

convert 20ml to 0.020L

0.2M x 0.020L

= 0.004 moles

300
What is the mass of a mole of an element?
The amu of the element found on the periodic table
400
How many atoms in 0.250 mol S?
1.51 x 10^23 atoms S
400

How many moles in 2.25 x 1025 atoms Zn?

37.4 mol Zn

400
How many grams in 4.50 x 10^12 atoms Cl?
2.65 x 10^-10 g Cl
400
What is the mass of HCl needed to make a 3M solution in 1L of water?

3M x 1L = 3 moles 

3 moles HCl x 36.453g = 109.359 grams HCl

400
What does amu stand for?
Atomic mass unit
500

How many atoms in 0.02550 g Pt?

Hint: You need the molar mass of Platinum

0.02550g x 1mol/195.084g = 0.0001307 mol

0.0001307 x 6.02 x1023

7.872 x 1019 atoms Pt

500
How many moles in 150 g S?
4.7 mol S
500

How many grams in 8.42 x 1018 atoms Br?

0.00112 g Br

500

What is the mass of HBr needed for a 0.2M solution in 500mL of water?

500mL = 0.5L

0.2M x 0.5L = 0.1 moles 

0.1 moles x 80.91g = 8.091g HBr

500

How many moles of Aluminum are needed in 5 moles of Al2O3?

5 moles of Al2O3 requires 10 moles of aluminum.