6.02214076×1023
6.022 x 1023 atoms in one mole of oxygen atoms bu 1.2044 x 1024 atoms in 1 mole of oxygen atoms
one avagadro number of particles are present
1 molecule O2 = 2 atoms O
so
1 mole O2 molecules = 2 mole O atoms
1 Mole = 6.022x10^23
150.0 g O2 x 1 mole O2/32 g O2 = 4.688 moles O2
4NH3 + 5O2 -> 4NO + 6H2O I suspect NH3 limits. Let's see. 5.15 O2 ( 4 mole NH3/5 mole O2) = 4.12 mole NH3 you do not have that much ammonia, so it limits and drives the reaction. 3.80 mole NH3 (4 mole NO/4 mole NH3) = 3.80 moles of NO made
15 moles O2 (32 grams/1 mole O2) = 480 grams
50.0 grams O2 (1 mole O2/32.0 grams)(6.022 X 1023/1 mole O2) = 9.41 X 1023 atoms of diatomic oxygen ---------------------------------------------------
0.220 mole O2
A mole of oxygen atoms has a mass of approximately 16 grams. A mole of O2 has a mass of approximately 32 grams. A mole is 6.02 x 1023 particles and as such a mole of oxygen atoms has only half the mass of a mole of oxygen molecules.
Balanced equation first. 4P + 5O2 -> 2P2O5 8.00 mole O2 (2 mole P2O5/5 mole O2) = 3.20 moles P2O5 produced
1 Mole = 6.022x10^23
150.0 g O2 x 1 mole O2/32 g O2 = 4.688 moles O2
Also 0,1 mole carbon dioxide.
Oxygen limits the reaction, so......Balanced equation. 2H2 + O2 -> 2H2O 7.89 mole H2O (1 mole O2/2 mole H2O) = 3.95 mole oxygen gas needed ------------------------------------------
82.5 grams O2 (1 mole O2/32 grams)(6.022 X 10^23/1 mole O2) = 1.55 X 10^24 atoms of O2
4NH3 + 5O2 -> 4NO + 6H2O I suspect NH3 limits. Let's see. 5.15 O2 ( 4 mole NH3/5 mole O2) = 4.12 mole NH3 you do not have that much ammonia, so it limits and drives the reaction. 3.80 mole NH3 (4 mole NO/4 mole NH3) = 3.80 moles of NO made
15 moles O2 (32 grams/1 mole O2) = 480 grams
50.0 grams O2 (1 mole O2/32.0 grams)(6.022 X 1023/1 mole O2) = 9.41 X 1023 atoms of diatomic oxygen ---------------------------------------------------
Balanced equation. 2H2 + O2 -> 2H2O 355 grams O2/32 grams = 11.1 moles O2 check for limiting reactant 11.1 moles O2 (2 mole H2/1 mole O2) = 22.2 mole H2 and H2 has no where near that many moles, so limits and drives reaction so, as they are one to one...... 22.2 moles of H2O are produced