Quiz on Luis' and Augie's Lab

Intro

100

When is stoichiometry used?

When exactness is needed.

200

What examples of uses of stoichiometry did we give?

Restaurants, Cooking, Labs.

300

Which previous lab did we reference in our intro?

Our PbCl Lab.

Methods

100

How many days did we leave the filter paper to dry?

2 days

200

What was the last step in our procedure?

Calculating our percent yield/error

300

How many grams of each product did we use?

0.75g of both CaCl₂ and Na₂CO₃

Data

100

How many moles of CaCl₂ did we use?

7.1 * 10^-3 moles

200

How many moles of Na₂CO₃ did we use?

5.1 * 10^-3 moles

300

How many moles of CaCO3 did we expect to create?

5.1 * 10^-3

Discussion

100

What was our percent error?

15%

200

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.

300

What did we use other than stoichiometry for this lab?

The power of friendship

Material Facts

100

What is one use of CaCl₂

Food

Highway construction

Waste water treatment

Ice removal

Agricultural and related biotechnologies

Cardiopulmonary resuscitation

Concrete acceleration

Mining

Tetra calcium chloride products

200

What is one use of NaCO₃

Detergents

Soaps

Paper

300

What is one use of CaCO₃

Construction

Marble (ingredient)
Concrete (ingredient)