The provided text is an instruction sheet for a chemistry lab called the "Target Stoichiometry Lab." It outlines the procedure for heating baking soda (sodium bicarbonate) to observe a chemical reaction and collect data.
Since this is a set of instructions rather than a specific question to solve, there is no single numerical answer. However, I can explain what you are supposed to do in this lab based on the text provided.
Explanation of the Lab Procedure:
1.
Goal: The main goal is to use stoichiometry (the math of chemistry) to predict how much product will be made when you heat baking soda.
2.
Step 1 & 3 (Weighing): You need to find the mass of the empty test tube first. Then, you add baking soda and weigh it again.
3.
Step 4 (Calculation): To find out exactly how much baking soda you are using, you subtract the mass of the empty tube from the mass of the tube with the baking soda.
* *Formula:* Mass of Baking Soda = (Mass of Tube + Baking Soda) - (Mass of Empty Tube)
4.
Step 5 & 6 (Setup): You spread the baking soda out in the tube and clamp it horizontally above a flame. This ensures the heat reaches all the baking soda evenly.
What happens next (implied by the title "Stoichiometry"):
Although the image cuts off before showing the reaction or questions, heating sodium bicarbonate ($NaHCO_3$) causes it to decompose into sodium carbonate ($Na_2CO_3$), water vapor ($H_2O$), and carbon dioxide gas ($CO_2$).
The balanced chemical equation for this reaction is:
$$2NaHCO_3(s) \rightarrow Na_2CO_3(s) + H_2O(g) + CO_2(g)$$
In the full lab, you would likely be asked to calculate the theoretical yield of the solid product (sodium carbonate) remaining in the tube after the gases escape.
Final Answer:
This document is a procedure guide, not a solvable problem. No final numerical answer is required.
Parent Tip: Review the logic above to help your child master the concept of baking soda stoichiometry worksheet with answers.
