BBC3 年
How are equations used to represent chemical reactions?
2 Write a simple equation by writing the ... not a multiple of the atoms on the left. 5 Repeat steps 3 and 4 until the chemical equation is balanced.
BBC4 年
Using balanced equations
Balanced equations are used to allow chemists to calculate ... Calculate the mass of reactant needed using the moles calculated in step 3 and the gram formula mass of the reactant.