How many grams of iron can be made from 16.5g of Fe2O3 by the following equation: Fe2O3 + 3 H2 -----> 2 Fe + 3 H2O.

11.4 g Fe2O3

To determine the number of grams of iron that can be made from 16.5g of Fe2O3, we need to use stoichiometry.

The balanced equation tells us that 1 mole of Fe2O3 reacts with 3 moles of H2 to produce 2 moles of Fe. We first need to convert the given mass of Fe2O3 to moles.

Molar mass of Fe2O3 = (2 * atomic mass of Fe) + (3 * atomic mass of O)
= (2 * 55.845 g/mol) + (3 * 16.00 g/mol)
= 111.69 g/mol + 48.00 g/mol
= 159.69 g/mol

Number of moles of Fe2O3 = Mass in grams / Molar mass
= 16.5 g / 159.69 g/mol
= 0.10327 mol (approximately)

According to the balanced equation, 1 mole of Fe2O3 reacts to form 2 moles of Fe. Therefore, the number of moles of Fe that can be produced is twice the number of moles of Fe2O3.

Number of moles of Fe = 2 * Number of moles of Fe2O3
= 2 * 0.10327 mol
= 0.20654 mol (approximately)

Now, we can calculate the mass of Fe using its molar mass.

Molar mass of Fe = 55.845 g/mol

Mass of Fe = Number of moles of Fe * Molar mass
= 0.20654 mol * 55.845 g/mol
= 11.54 g (approximately)

Therefore, approximately 11.54 grams of iron can be produced from 16.5g of Fe2O3.

To find out how many grams of iron (Fe) can be made from 16.5g of Fe2O3 using the given equation, you need to follow these steps:

Step 1: Determine the molar mass of Fe2O3:
Fe2O3 = 2(Fe) + 3(O) = (2x55.85g/mol) + (3x16.00g/mol) = 159.69g/mol

Step 2: Convert the given mass of Fe2O3 to moles:
moles of Fe2O3 = mass (g) / molar mass (g/mol) = 16.5g / 159.69g/mol = 0.1033 mol

Step 3: Use the stoichiometry of the balanced chemical equation to find the moles of Fe:
According to the balanced equation, the ratio of Fe2O3 to Fe is 1:2.
moles of Fe = 0.1033 mol Fe2O3 x (2 mol Fe / 1 mol Fe2O3) = 0.2066 mol Fe

Step 4: Calculate the mass of Fe using the molar mass of Fe:
mass of Fe = moles of Fe x molar mass of Fe = 0.2066 mol x 55.85 g/mol = 11.52g (rounded to two decimal places)

Therefore, approximately 11.52 grams of iron can be made from 16.5 grams of Fe2O3.

Here is an example stoichiometry problem I've posted. Just follow the steps.

http://www.jiskha.com/science/chemistry/stoichiometry.html