Today's lesson was simply an extension of last class's material. Mass to mass problems involve one additional conversion:
After writing the balanced chemical formula, find the mass of the first substance. Use its molar mass to convert it to mole units. Then, use the coefficients of the balanced equation (remember: what you need over what you have). Finally, use the molar mass of the new substance to determine the mass.
EXAMPLES:
*Chlorine reacts with 0.29g of sodium iodide. What is the mass of sodium chloride that is produced?
*When water reacts with 0.38g of lithium nitride, what is the mass of lithium hydroxide produced?
*How many grams of O2 are produced from the decomposition of 3.0g of potassium chlorate?
Next class: Stoichiometry Investigation Lab!
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