2zN reacts with O2 to produce 2ZnO, HOW MANY GRAMS OF ZINC OXIDE CAN BE PRODUCED FROM 2.75 G OF OXYGEN?
6.92
To find out how many grams of zinc oxide can be produced from 2.75 g of oxygen, we need to determine the stoichiometry of the reaction.
From the balanced chemical equation, we know that the stoichiometric ratio between O2 and ZnO is 1:2. This means that for every 1 mole of O2, we produce 2 moles of ZnO.
To start, we need to convert the given mass of oxygen (2.75 g) to moles. We can do this by using the molar mass of oxygen.
Molar mass of O2 = 16.00 g/mol
Number of moles of O2 = Mass of O2 / Molar mass of O2
= 2.75 g / 32.00 g/mol
≈ 0.08594 mol
Now, using the stoichiometry of the reaction, we can determine the number of moles of ZnO produced.
Number of moles of ZnO = Number of moles of O2 x (2 moles ZnO / 1 mole O2)
= 0.08594 mol x (2 mol ZnO / 1 mol O2)
= 0.17188 mol
Finally, we can convert the number of moles of ZnO to grams using the molar mass of ZnO.
Molar mass of ZnO = 81.38 g/mol
Mass of ZnO = Number of moles of ZnO x Molar mass of ZnO
= 0.17188 mol x 81.38 g/mol
≈ 14.00 g
Therefore, approximately 14.00 grams of zinc oxide can be produced from 2.75 grams of oxygen.
To determine the number of grams of zinc oxide that can be produced from 2.75 g of oxygen, we need to use the balanced chemical equation and convert the given mass of oxygen to the mass of zinc oxide.
The balanced chemical equation for the reaction between 2zN and O2 is:
2zN + O2 → 2ZnO
From the balanced equation, we can see that 1 mole of O2 reacts to produce 2 moles of ZnO.
Step 1: Convert the mass of oxygen (O2) to moles:
To convert grams of a substance to moles, we need to know the molar mass of oxygen.
The molar mass of oxygen (O2) is approximately 32 g/mol (16 g/mol for each oxygen atom).
Moles of O2 = Mass of O2 (in grams) / Molar mass of O2
Moles of O2 = 2.75 g / 32 g/mol = 0.08594 mol (rounded to 5 decimal places)
Step 2: Calculate the moles of ZnO produced:
From the balanced equation, we know that 1 mole of O2 reacts to produce 2 moles of ZnO.
Moles of ZnO = 2 * Moles of O2 = 2 * 0.08594 mol = 0.1719 mol (rounded to 4 decimal places)
Step 3: Convert moles of ZnO to grams:
To convert moles of a substance to grams, we need to know the molar mass of zinc oxide (ZnO).
The molar mass of zinc oxide (ZnO) is approximately 81 g/mol (65.38 g/mol for zinc + 16 g/mol for oxygen).
Mass of ZnO = Moles of ZnO * Molar mass of ZnO
Mass of ZnO = 0.1719 mol * 81 g/mol = 13.9339 g (rounded to 4 decimal places)
Therefore, approximately 13.93 grams of zinc oxide can be produced from 2.75 grams of oxygen.
2Zn + O2 ==> 2ZnO
mols O2 = grams/molar mass = ?
Using the coefficients in the balanced equation convert mols O2 to mols ZnO. That will be just mols ZnO = mols O2 x 2.
Then convert mols ZnO to grams ZnO with grams = mols x molar mass.