HELP!!! Classify the following statements as true or false.?

Question

1. One mole of CO2 has the same number of oxygen atoms as one mole of SO2

2. One mole of water has the same number of atoms as one mole of neon.

3. One mole of SO2 has more molecules than one mole of ozone O3.

4. One mole of SO2 has the same mass as one mole of CO2.

5.One mole of water has more molecules than one mole of carbon dioxide.

Answer 1

1. True--one mole of CO2 has two moles of oxygen atoms in it, and one more of SO2 has the same thing.

2. False--since water is H2O, water has three moles of *atoms* (two of hydrogen and one of oxygen), but neon (assuming that you're talking about Ne and not Ne2--either way it's false) only has one mole of atoms. Note the difference between *atoms* and *molecules*.

3. False--one mole of SO2 has one more of molecules, just like ozone...it's the definition of "mole".

4. False--S and C have different atomic weights, and therefore the respective molecules weigh different amounts.

5. False--same as #2.

Hope this helps!

Answer 2

Recall:
a) 1 mole of a molecule = 6.02 x 10^23 molecules.

b) if one molecule has 2 atoms, there are twice as many molecules. Ex. one molecule of CO has two atoms, so one mole of the CO has 2 x (6.02 x 10^23) atoms

On to your statements:
1) One mole of CO2 has 3 x (6.02 x 10^23) atoms (one carbon and two oxygens in a single molecule. The same is true for SO2 (one sulfur and two oxygens = three total atoms).

True

2) One mole of water (H2O) has 3 x (6.02 x 10^23) atoms (two hydrogens and one oxygen in a single water molecule). Neon is a noble gas molecule that is stable by itself so it is made of just one Neon atom. So, one mole of Neon molecules has 1 x (6.02 x 10^23) atoms.

False

3) Both SO2 and O3 molecules consist of three atoms per molecule.

False

4) Both SO2 and CO2 have the same number of atoms per molecule, but sulfur is heavier than carbon. So, for an equal number of SO2 and CO2, SO2 is heavier.

False

5) One mole of any molecule has an equal number of molecules as one mole of any other molecules. They both have 6.02 x 10^23 molecules.

False

Only one true and the rest are false. That is one scary assignment. :)

Answer 3

1. True
2. False, Unless neon forms a molecule with three atoms...is it usually Ne3?
3. True
4.True
5.True
Remember the most important thing to do in chemistry is to BALANCE the equations Good Luck!

Answer 4

Only the first is true.