When is stoichiometry used?
When exactness is needed.
How many days did we leave the filter paper to dry?
2 days
How many moles of CaCl2 did we use?
7.1 * 10^-3 moles
What was our percent error?
15%
What is one use of CaCl2
What was the last step in our procedure?
Calculating our percent yield/error
How many moles of Na2CO3 did we use?
5.1 * 10^-3 moles
What was one of the reasons we gave for why we had created more product than expected?
Weighing out our initial reactants incorrectly, or from not mixing our two reactants thoroughly enough leading to excess particles of CaCl2s or Na2CO3aq to stay in the filter paper when they should have filtered through.
What is one use of NaCO3
Detergents
Soaps
Paper
Which previous lab did we reference in our intro?
Our PbCl Lab.
How many grams of each product did we use?
0.75g of both CaCl2 and Na2CO3
How many moles of CaCO3 did we expect to create?
5.1 * 10^-3
What did we use other than stoichiometry for this lab?
The power of friendship
What is one use of CaCO3
Construction
Marble (ingredient)
Concrete (ingredient)