1. Balanced Chemical Equation:
* You need the balanced chemical equation for the reaction. This tells you the mole ratio between reactant A and product D.
2. Molar Mass:
* You'll need the molar masses of both reactant A and product D. This is the mass of one mole of each substance (usually found on the periodic table).
3. Conversion Steps:
* Step 1: Convert mass of reactant A to moles: Divide the given mass of A by its molar mass.
* Step 2: Use the mole ratio: Multiply the moles of A by the mole ratio from the balanced equation (moles of D / moles of A). This gives you the moles of product D formed.
* Step 3: Convert moles of D to mass: Multiply the moles of D by its molar mass.
Example:
Let's say you have the following reaction:
2 A -> D
And you know:
* Mass of A = 10 grams
* Molar mass of A = 50 g/mol
* Molar mass of D = 100 g/mol
Calculations:
1. Moles of A: 10 g / 50 g/mol = 0.2 moles
2. Moles of D: 0.2 moles A * (1 mole D / 2 moles A) = 0.1 moles D
3. Mass of D: 0.1 moles D * 100 g/mol = 10 grams
Therefore, 10 grams of product D will be produced from 10 grams of reactant A.
