ten mols of metallic iron was dissolved in concentrated HCl.what is the balanced chemical equation?

a) what is the mass of each product that formed?

b) what amount of HCl was used in this reaction?

need help in those three questions please......

Fe + 2HCl ==> FeCl2 + H2

This site will give you the steps for a stoichiometry problem. You have moles in the problem; therefore, you do not need to convert grams to moles.
http://www.jiskha.com/science/chemistry/stoichiometry.html

To determine the balanced chemical equation for the reaction between metallic iron (Fe) and concentrated hydrochloric acid (HCl), we need to consider the reactants and products involved.

a) Balanced Chemical Equation:
The reaction between Fe and HCl can be represented by the following balanced chemical equation:

Fe + 2HCl → FeCl2 + H2

In this equation, one mole of metallic iron (Fe) reacts with two moles of hydrochloric acid (HCl) to yield one mole of iron(II) chloride (FeCl2) and one mole of hydrogen gas (H2).

b) Mass of Each Product:
To determine the mass of each product formed, we need to know the molar mass of each substance involved. The molar masses (in g/mol) are as follows:

Molar mass of Fe = 55.85 g/mol
Molar mass of HCl = 36.46 g/mol
Molar mass of FeCl2 = 126.75 g/mol
Molar mass of H2 = 2.02 g/mol

To find the mass of each product, we multiply the molar mass by the number of moles reacted. In this case, we have ten moles of Fe.

Mass of FeCl2 = (10 mol Fe) * (1 mol FeCl2 / 1 mol Fe) * (126.75 g/mol)
Mass of H2 = (10 mol Fe) * (1 mol H2 / 1 mol Fe) * (2.02 g/mol)

Calculating these values will give you the mass of each product formed.

c) Amount of HCl Used:
To determine the amount of HCl used in the reaction, we need to consider the stoichiometry of the reaction. From the balanced chemical equation, we can see that 2 moles of HCl react with 1 mole of Fe.

Therefore, if 10 moles of Fe reacted, the amount of HCl used would be:

Amount of HCl = (10 mol Fe) * (2 mol HCl / 1 mol Fe) * (36.46 g/mol)

Calculating this value will give you the amount of HCl used in the reaction.

Remember to perform the necessary calculations using the proper units and conversions to obtain the final answers.