1. Review of Calculating Molecules Lesson 10

2. Calculate the number of H atoms in C12H24N2SO3 if there are 144 C atoms.
144 at C
x 1 molecule
x at H
= 288 at H
12 at C
1 molecule
Calculate the number of C atoms in C12H24N2SO3 if there are 240 H atoms.
240 at H
x 1 molecule
x at C
= at C
24 at H
1 molecule

3. Calculate the mass of C12H24N2SO3 if there are 8.00 x 10 22 H atoms.
8.00 x at H
x 1 molecule
x mole
x g
24 at H
6.02 x molecule
1 mole
= g
Calculate the mass of C12H24N2SO3 if there are 4.00 x C atoms.
4.00 x at C
x 1 molecule
x mole
x g
12 at C
6.02 x molecule
1 mole
= g

4. Each shape has a value. The rows and columns add up to the numbers indicated, determine the value of ?