Question

if you want to produce 85g of silicon, how many grams of magnesium will you need? How many grams of sand will you need to produce 85g of silicon?

Answer 1

The production of silicon by the reaction of magnesium and sand is represented by the following chemical equation:

SiO2 + 2Mg → 2MgO + Si

The equation shows that 1 mole of silicon (Si) is produced from 2 moles of magnesium (Mg) and 1 mole of sand (SiO2).

The molar mass of silicon is 28.09 g/mol, so to produce 85 g of silicon, we need:

2/1 * 28.09 g/mol * (85 g / 28.09 g/mol) = 480 g of magnesium

To produce 85 g of silicon, we need 1/1 * 60.08 g/mol * (85 g / 28.09 g/mol) = 180 g of sand.