1. Suppose your classmates will be visiting you. You decided to make burger for their snack. You have 20 burger patties and 17 burger buns, how many burgers you can make? с. 3 d. 37 a. 20 b. 17 2. Based on problem 1, what is the limiting reactant? a. burger buns b. burger patties c. your classmates d. your budget 3. Based on problem 1, how many burger patties are extra after your preparation for snack? a. O b. 37 с. 17 d. 3
1. Suppose your classmates will be visiting you. You decided to make burger for their snack. You have 20 burger patties and 17 burger buns, how many burgers you can make? с. 3 d. 37 a. 20 b. 17 2. Based on problem 1, what is the limiting reactant? a. burger buns b. burger patties c. your classmates d. your budget 3. Based on problem 1, how many burger patties are extra after your preparation for snack? a. O b. 37 с. 17 d. 3
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter21: The Chemistry Of The Main Group Elements
Section: Chapter Questions
Problem 120IL
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The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
Transcribed Image Text:Multiple Choice. Read and analyze each question. Write the letter that
corresponds to your answer on a separate sheet of paper.
1. Suppose your classmates will be visiting you. You decided to make burger for their
snack. You have 20 burger patties and 17 burger buns, how many burgers you can
make?
а. 20
b. 17
с. 3
d. 37
2. Based on problem 1, what is the limiting reactant?
a. burger buns
b. burger patties
c. your classmates
d. your budget
3. Based on problem 1, how many burger patties are extra after your preparation for
snack?
с. 17
d. 3
a. 0
b. 37
For numbers 4-10. If 68 g of Zn reacts with 27.5 g of HC1. Use the chemical equation
to answer the following questions below.
Zn + 2HC1
ZnCl2 + H2
4. What is the molar mass of Zn?
a. 65 g/mol
b. 30 g/mol
c. 27 g/ mol
d. 68 g/ mol
5. What is the molar mass of HC1?
a. 2 g/mol
b. 16 g/mol
6. What coefficient is indicated in HCl?
c. 36 g/mol
d. 68 g/mol
c. 4
d. 5
a. 2
b. 3
7. Which substance is limiting reactant?
a. ZnCl2
b. HCl
8. Which substance is excess reactant?
c. Zn
d. H2
а. HC
b.H2
9. What is the molar mass of ZnCl2?
a. 135 g/mol
b. 65 g/mol
10. How many grams of H2 will be produced?
a. 0.76 g
b. 72 g
c. ZnCl2
d. Zn
c. 70 g/mol
d. 35 g/mol
c. 55 g
d. 27.5 g
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