Name: Lab 5 Prelab Questions Stoichiometry Instructions: Conplete the following questions and hand in at the start of your lab period or when instructed by your instructor. Show your work with units and correct significant figures for all questions that involve a calculation. 1. Calculate the molecular weights of all the compounds in the reaction we are doing in this lab (and copy them onto your procedure.. they will be helpful): a NaCO3 d. H2O b. HCI e. CO2 NaCI

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Name:
Lab 5 Prelab Questions
Stoichiometry
Instructions: Complete the following questions and hand in at the start of your lab period or when
instructed by your instructor. Show your work with units and correct significant figures for all questions
that involve a calculation
1. Calculate the molecular weights of all the compounds in the reaction we are doing in this lab
(and copy them onto
your procedure. they will be helpful):
a. NaCO3
d. HO
b. НC
c. CO2
c. Naci
2. The following is some example data for the lab. Usc the data to answer the following questions.
Mass of test tube and boiling chip
Mass of test tubc. boiling chip and NazCO
Mass of test. mube, boiling chiprand NaCl
a. How much NazCO3 was zdded to the test tube?
18.250 g
18.664 g
18.523 g
b. How many grams Nači was produced from the experiment?
c. Using the balanced chenical cquation, the amount of limiting reactant calculated above,
and molar masses from question 1, how many moles of NaCl should the experiment have
produced?
DFocus
68
19
144
ho
>A
%24
&
4
7.
8.
9
Transcribed Image Text:Search Misganau Lab 5 Stoichiometry MG - Protected View Saved to this PC Layout References Mailings Review View Help Enable Editing cernet can contain viruses. Unless you need to edit, it's safer to stay in Protected View. Name: Lab 5 Prelab Questions Stoichiometry Instructions: Complete the following questions and hand in at the start of your lab period or when instructed by your instructor. Show your work with units and correct significant figures for all questions that involve a calculation 1. Calculate the molecular weights of all the compounds in the reaction we are doing in this lab (and copy them onto your procedure. they will be helpful): a. NaCO3 d. HO b. НC c. CO2 c. Naci 2. The following is some example data for the lab. Usc the data to answer the following questions. Mass of test tube and boiling chip Mass of test tubc. boiling chip and NazCO Mass of test. mube, boiling chiprand NaCl a. How much NazCO3 was zdded to the test tube? 18.250 g 18.664 g 18.523 g b. How many grams Nači was produced from the experiment? c. Using the balanced chenical cquation, the amount of limiting reactant calculated above, and molar masses from question 1, how many moles of NaCl should the experiment have produced? DFocus 68 19 144 ho >A %24 & 4 7. 8. 9
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